YQuantum® https://yquantum.ch Small Parts. Giant Leaps. Sat, 14 Mar 2026 16:51:35 +0000 en hourly 1 https://wordpress.org/?v=6.9.4 https://yquantum.ch/wp-content/uploads/2025/07/YQuantum-Logo-positiv.svg YQuantum® https://yquantum.ch 32 32 251117506 University of Sydney https://yquantum.ch/university-of-sydney/ Tue, 03 Mar 2026 14:30:08 +0000 https://yquantum.ch/?p=7986

YQuantum and the University of Sydney Announce Partnership to Advance Quantum Packaging

Zurich, March 3, 2026

YQuantum and the University of Sydney are proud to announce a partnership aimed at significantly improving qubit performance while delivering commercially viable solutions. Led by Dr. Xanthe Croot, the Sydney team aims to build next-generation circuits for quantum computing and explore fundamental physics. This collaboration contributes directly to the Australian quantum computing effort, bridging the gap between leading academic research groups and industry solutions made for fast turnaround and speeding up development.

The partnership has already yielded impressive results. By integrating YQuantum’s specialized quantum sample packaging into their cryogenic setup, the Sydney team achieved high coherence times of  T1 > 200us and T2 > 180us. This milestone demonstrates how high-quality, Swiss-engineered hardware can support high-coherence measurements but also facilitate industry-ready packaging that solves critical bottlenecks in quantum environment shielding.

Dr. Xanthe Croot, Director of the Superconducting Quantum Circuits Laboratory at the University of Sydney, commented:
“By integrating YQuantum’s solutions, we have extended the operational limits of our current experimental framework. Demonstrating such high coherence times within their packaging gives us the confidence and reliability we need to develop new qubits and scale to better and more complex systems. This close cooperation between industry and academia is essential for building the next generation of quantum computers.”

Christian Jünger, CEO of YQuantum, added:
“We are thrilled to support innovative, high-performance research teams like Dr. Croot’s. A collaborative approach like this benefits not only our respective teams but the entire scientific ecosystem. We are dedicated to being a crucial enabler for the quantum industry, and this successful partnership perfectly exemplifies that mission.

]]> 7986 University of Napoli Federico II https://yquantum.ch/university-of-napoli-federico-ii/ Fri, 13 Feb 2026 14:23:43 +0000 https://yquantum.ch/?p=7962

YQuantum and University of Napoli Announce Strategic Partnership to Advance Quantum Hardware

Zurich, February 13, 2026

YQuantum and the University of Napoli Federico II are proud to announce a strategic partnership aimed at accelerating the development of high-performance quantum computing hardware within the University’s Quantum Computing Center. Led by Professors Francesco Tafuri, Davide Massarotti, and Halima Giovanna Ahmad this collaboration contributes directly to the Italian national quantum computing effort, bridging the gap between academic research and industrial-grade control solutions.

Achieving Industry-Leading Fidelity
The partnership has already yielded significant results. By integrating YQuantum’s specialized Flux Bias-T technology into their cryogenic setup, the Napoli team achieved a two-qubit gate fidelity of 99%. This milestone demonstrates how engineered hardware linearity can solve critical bottlenecks in quantum control, ensuring complex waveforms reach quantum processors without deformation.

Prof. Francesco Tafuri, Head of the Quantum Computing Center at the University of Naples, commented:
“Collaborating with YQuantum has allowed us to push our experimental capabilities further. The precision of their control hardware was a key factor in achieving 99% gate fidelity, demonstrating that close cooperation between industry and academia is essential for the next generation of quantum computers.”

Innovating Packaging & Cryogenic Infrastructure
Beyond precise signal conditioning, the collaboration addresses the physical challenges of scaling quantum systems. YQuantum delivered high-performance QPU packaging to support the Center’s proprietary quantum chip development.

Complementing this packaging solution, YQuantum provided a custom cryogenic Coldstage that allows the research group to measure multiple devices simultaneously in a single cooldown. This solution optimizes shielding and thermal performance, significantly increasing the laboratory’s testing throughput and maximizing the utility of limited cryogenic space.

Christian Jünger, CEO of YQuantum, added:
“We are proud to support the University of Napoli’s contribution to the national quantum effort. Seeing our hardware deliver state-of-the-art results in their rigorous research environment validates our approach to high-fidelity quantum control and cryogenic engineering.”

Looking Ahead
This partnership stands as a testament to the synergy between precision research and advanced engineering. Both parties look forward to continuing this collaboration to support the group’s future breakthroughs in quantum technology.

]]> 7962 Rhonexum https://yquantum.ch/rhonexum/ Wed, 07 Jan 2026 14:16:37 +0000 https://yquantum.ch/?p=7955

YQuantum and Rhonexum Join Forces to Advance Cryogenic Hardware Solutions

Zurich, January 7, 2026

YQuantum and Rhonexum are pleased to announce a new collaboration, uniting two dynamic forces in the Swiss quantum ecosystem. This partnership is driven by a shared vision: to overcome the hardware bottlenecks that currently limit the scalability of quantum computers.

As the industry pushes toward larger and more powerful quantum processors, the physical and thermal constraints inside the cryostat become increasingly critical. Solving these challenges requires more than just better individual parts, it demands a co-design philosophy that bridges the gap between electronics and the environments they operate in.

This collaboration brings together two highly specialized skill sets:

  • Rhonexum brings cutting-edge innovation in active cryogenic electronics.
  • YQuantum leverages its expertise in hardware integration, providing the scalable platforms necessary to host and manage complex electronic systems.

By working together, the two companies aim to move the industry away from discrete solutions toward integrated, system-level architectures.

“Collaborating with Rhonexum represents a key step in our strategy to provide comprehensive infrastructure for quantum computing,” said Christian Jünger, CEO of YQuantum.

Vicente Carbon, CEO of Rhonexum, added: “Active cryogenic electronics are a fundamental requirement for scaling quantum computers. Our partnership with YQuantum ensures this necessary technology is delivered in a robust platform built for future large-scale systems.”

YQuantum and Rhonexum are committed to driving innovation through collaboration. This partnership not only strengthens the position of both companies but also reinforces the Swiss contribution to the global quantum supply chain.

]]> 7955 Cryo Flux BiasT Array https://yquantum.ch/cryo-flux-biast-array/ Wed, 12 Nov 2025 16:01:04 +0000 https://yquantum.ch/?p=4736

Cryo Flux BiasT Gold-plated OFHC copper casing.

Cryo Flux BiasT Array

Precision Flux-Biasing for Scale

YQ-CBT12-1G | DC – 1GHz, 50Ω

In stock – Contact us to order

A high-density solution featuring 12 cryogenic BiasT circuits. Engineered for minimal heat load and exceptional linearity, this array provides the clean, first-order transfer functions required to maintain high-fidelity control in large-scale superconducting architectures.

Contact
Datasheet

Key performance metrics are:

  • Main application: Flux-biasing of superconducting qubits
  • Array of 12 cryogenic BiasT circuits
  • Highly linear and first-order transfer function
  • 10 kHz to 1 GHz frequency range for RF
  • Optimized for low thermal dissipation
  • Compatible with Bluefors twisted pair DC wiring (Micro-D)
  • SMP connector interface for RF and RF+DC
  • Low insertion- and high return-loss
  • Gold-plated OFHC copper casing

Absolute Maximum Ratings

DC input current +/-25 mA
RF pulse amplitude +/- 20 V
Operating temperature 10 mK to 4 K

Typical Performance

RF frequency 10 kHz – 1 GHz
Insertion loss < 1.0
Return loss > 13.0 dB

Circuit Schematic

Qubit Step Response*

* Qubit frequency measured as a function of flux pulse delay. The measured response (green) agrees well with a simple, first-order model, see black dashed line.

Drawing [mm]

Interested? Contact us

For more information and availability, you can contact us by leaving a message.

]]> 4736 IR-Filter https://yquantum.ch/ir-filter/ Fri, 22 Aug 2025 18:39:06 +0000 https://yquantum.ch/?p=2433

IR-Filter Gold-plated OFHC copper with SMA connectors

IR-Filter

Infrared-Filter for Microwave Signals

YQ-IR-110A | DC – 10GHz, 50Ω

In stock – Contact us to order

This reliable infrared filter protects the coherence of your qubits by blocking high-energy radiation. Our filters are manufactured using a simple, patent-pending process that ensures consistent transmission and reflection parameters across multiple units.

For versions with different attenuation levels or connector interfaces, please contact YQuantum.

Contact
Datasheet

Key performance metrics are:

  • IR-filter for microwave signals to protect qubit coherence 
  • Reliable, patented-pending manufacturing process 
  • Gold-plated OFHC copper casing for cryogenic use 
  • 2.5 dB loss at 6 GHz
  • High return loss > 20.0 dB
  • Low insertion- and high return-loss
  • SMA connector interface
  • 7.5mm in diameter
  • Based on ©Eccosorb CR 110

Typical Performance​

RF frequency DC – 10 GHz
Insertion loss < 6.0 dB
Return loss > 20.0 dB

Circuit Schematic

Scattering-Parameters

* Cryogenic measurement done in liquid helium dipstick & normalized to reference through.

Wideband Attenuation

Drawing Casing [mm]

Interested? Contact us

For more information and availability, you can contact us by leaving a message.

]]> 2433 20 RF-Port Sample Box​ https://yquantum.ch/20rf-quantum-device-packaging/ Wed, 20 Aug 2025 16:00:32 +0000 https://yquantum.ch/?p=5172

Quantum Packaging
20 RF-Port Sample Box

20 RF-Port Sample Box

Quantum Device Packaging​

YQ-QP-20A | 20 RF-Port Sample Box

In stock – Contact us to order

Our 20-port sample box enables high-performance QPU measurements with 5–15 qubits, depending on your architecture.

Designed for superior shielding, light-tightness, and thermalization, it features a 10×10 mm device cutout with 20 RF-ports, engineered to power your next-level experiments.

Contact
Datasheet

For drawings and dimensions, see Datasheet. More technical specs and data, on request – feel free to get in touch.

Key performance metrics are:

  • 20 RF-ports (SMP)
  • Fully light-tight chip enclosure with magnetic shielding
  • RF-PCB with a 10×10 mm chip cutout and optimized for a 500 μm chip thickness
  • Low-loss, low-crosstalk 4-layer RF-PCB
  • Non-magnetic components only (PCB, connectors, etc.)
  • Sample box resonance frequencies above 15 GHz
  • Nickle-free gold plating of copper part

Typical Performance

RF frequency DC – 12 GHz
PCB insertion loss < 1.0 dB
PCB return loss > 15.0 dB

 

PCB crosstalk < -52.0 dB
Box mode freq. > 15.0 GHz
Sample size 10.0 x 10.0 mm

Typical Resonator Data *

* measured at single photon level. Data provided by PSI research group of Dr. Alexander Grimm.

Quantum Packaging
Coldfinger with Shielding

Coldfinger & Shielding

Quantum Device Packaging​

Our cold finger is built to host multiple experiments, accommodating both 8-port and 20-port sample boxes at the same time. This design keeps you flexible and enables efficient, simultaneous experimentation.

Key performance metrics are:

  • 20 RF-ports with SMP connectors

  • Fully light-tight cable feedthroughs

  • Mu-metal and Aluminum shields (with flange)

  • Direct thermalization using OFHC copper parts

  • Coldfinger mounting brackets for different cryostats available

  • Possibility to host 1 x 20-port sample box or 2 x 8-port sample boxes

  • Nickle-free gold plating of all copper parts

Drawing Coldfinger & Shielding [mm]

Mu-Metal Shield (A4K, 0.04’’)
SC-Shield (Al. 1050)
Coldfinger

Interested? Contact us

For more information and availability, you can contact us by leaving a message.

]]> 5172 8 RF-Port Sample Box https://yquantum.ch/8rf-quantum-device-packaging/ Wed, 20 Aug 2025 15:30:29 +0000 https://yquantum.ch/?p=5351

Quantum Packaging
8 RF-Port Sample Box

8 RF-Port Sample Box

Quantum Device Packaging​

YQ-QP-8A | 8 RF-Port Sample Box

In stock – Contact us to order

Our compact sample box is designed for few-qubit, high-coherence experiments where speed and throughput are critical.

With 8-RF ports, a 10×10 mm cutout, and a swappable, cost-efficient PCB, it enables fast turnaround and multiple samples on one of our cold fingers.

Contact
Datasheet

For drawings and dimensions, see Datasheet. More technical specs and data, on request – feel free to get in touch. 

Key performance metrics are:

  • 8 RF-ports (SMP)

  • Compact, fully light-tight chip enclosure with magnetic shielding

  • RF-PCB with a 10×10 mm chip cutout and optimized for a 500 μm chip thickness

  • Low-loss, low-crosstalk 2-layer RF-PCB

  • Non-magnetic components only (PCB, connectors, etc.)

  • Sample box resonance frequencies above 15 GHz

  • Nickle-free gold plating of copper part

Typical Performance

RF frequency DC – 12 GHz
PCB insertion loss < 0.5 dB
PCB return loss > 14.0 dB

PCB crosstalk < -60.0 dB
Box mode freq. > 15.0 GHz
Sample size 10.0 x 10.0 mm

Representative Qubit Coherence *

* Data were provided by the research group of Dr. Xanthe Croot (University of Sydney). The devices were fabricated by Dr. Yun Li, and were packaged, and measured by Dr. Yun Li, Dan Osgood, and Alex Ryan.

Qubit Thermal Population **

** The thermal population is extracted from single-shot qubit readout measurements of a qubit with a frequency of 4.5 GHz.

Quantum Packaging
Coldfinger with Shielding

Coldfinger & Shielding

Quantum Device Packaging​

Our cold finger is built to host multiple experiments, accommodating both 8-port and 20-port sample boxes at the same time. This design keeps you flexible and enables efficient, simultaneous experimentation.

Key performance metrics are:

  • 20 RF-ports with SMP connectors

  • Fully light-tight cable feedthroughs

  • Mu-metal and Aluminum shields (with flange)

  • Direct thermalization using OFHC copper parts

  • Coldfinger mounting brackets for different cryostats available

  • Possibility to host 1 x 20-port sample box or 2 x 8-port sample boxes

  • Nickle-free gold plating of all copper parts

Drawing Coldfinger & Shielding [mm]

Mu-Metal Shield (A4K, 0.04’’)
SC-Shield (Al. 1050)
Coldfinger

Interested? Contact us

For more information and availability, you can contact us by leaving a message.

]]> 5351 Flux BiasT https://yquantum.ch/flux-biast/ Tue, 19 Aug 2025 14:38:48 +0000 https://yquantum.ch/?p=1670
BiasT Aluminum casing Mounting holes on backside

Flux BiasT

High-Fidelity Qubit Control​

YQ-BT-2G | 10 kHz – 2 GHz, 50 Ω

In Stock – Contact us for a Quote

Our specialized BiasT solution is designed to enable high-fidelity two-qubit gates on flux-tunable superconducting quantum computers. This component provides outstanding linearity and superior noise suppression.

Flux-tunable qubits are highly sensitive to control signal noise, which can be effectively filtered using our BiasT. Additionally, achieving high-fidelity control of qubit frequency requires compensating for the transient response of the control line. This precompensation depends on the system’s linearity, a characteristic that our BiasT ensures. Learn more about the importance of linerarity in our Application Note, see below.

Contact
Application Note
Datasheet

Key performance metrics are:

  • Highly linear and first-order transfer function
  • 10 kHz to 2 GHz frequency range for RF signals
  • Low-pass filter for DC with 10 Hz cutoff and 60 dB of suppression up to 1 GHz
  • Precision 1 kΩ* (±5 ppm/°C) bias resistor for DC path (*Contact YQuantum for different bias resistance values)
  • Low insertion- and high return-loss (> 16.0 dB)

Absolute Maximum Ratings

DC input voltage +/-20 V
RF input power +32 dBm
Operating temperature -55 to 85 °C

Typical Performance

DC input voltage +/-20 V
RF input power +32 dBm
Operating temperature -55 to 85 °C

Circuit Schematic

Step Response into 50 Ω

Scattering-Parameters

Drawing Casing [mm]

Interested? Contact us

For more information and availability, you can contact us by leaving a message.

]]> 1670 Quantum Device Packaging old https://yquantum.ch/quantum-device-packaging-2/ Sun, 17 Aug 2025 09:15:40 +0000 https://yquantum.ch/?p=878

Quantum Packaging
Shielding & Sample Disk

Quantum Device Packaging old

20 RF-Port Sample Holder

YQ-QP-20A | 20 RF-Port Sample Holder

In stock – Contact us to order

We offer a highly efficient quantum packaging solution, optimized for superior magnetic shielding, light-tightness, and thermalization. 

Featuring 20 RF-ports and a 10×10 mm cutout for your quantum device, this sample holder is ready to make the difference for your experiments.

Contact
Datasheet

More technical specs, data, and drawings available on request – feel free to get in touch.

Key performance metrics are:

  • 20 RF-ports with SMP connectors
  • Fully light-tight cable feedthroughs and chip enclosure
  • Mu-metal and Aluminum shields (with flange)
  • RF-PCB with a 10×10 mm chip cutout
  • Low-loss, low-crosstalk 4-layer RF-PCB
  • Non-magnetic components only (PCB, connectors, etc.)
  • Sample box resonance frequencies above 15 GHz
  • Direct thermalization using OFHC copper parts
  • Sample holder mounting brackets for different cryostats available
  • Optional: Nickle-free gold plating of all copper parts

Typical Performance

RF frequency DC – 12 GHz
PCB insertion loss < 1.0 dB
PCB return loss > 15.0 dB

PCB crosstalk < -52.0 dB
Box mode freq. > 15.0 GHz
Sample size 10.0 x 10.0 mm

Drawing Shielding [mm]

Mu-Metal Shield (A4K, 0.04’’)
SC-Shield (Al. 1050)
Coldfinger

Drawing Sample Disk [mm]

Top Sample Holder (Copper C101)
Bottom Al. Cover (Al. 1050)

Interested? Contact us

For more information and availability, you can contact us by leaving a message.

]]> 878 UC Berkeley https://yquantum.ch/uc-berkeley/ Fri, 11 Jul 2025 14:10:24 +0000 https://yquantum.ch/?p=7944

Berkeley Quantum Partners with YQuantum to Improve Hardware for Quantum Computing

Berkeley, July 11, 2025

We are thrilled to announce our collaboration with UC Berkeley partnering with the Berkeley Quantum initiative and the Quantum Nanoelectronics Lab under Prof. Irfan Siddiqi to advance cryogenic hardware for large-scale quantum computing.

At YQuantum, we specialise in miniaturised cryogenic components critical for next-generation quantum systems. Our solutions are designed to tackle the core scaling challenge in quantum processors—limited space inside cryostats as qubit counts grow. By working directly with UC Berkeley’s cutting-edge superconducting quantum processors, we are validating our products in real-world environments and building performance credibility.

“Partnering with Professor Siddiqi’s lab at UC Berkeley is a unique opportunity for YQuantum,” said Christian Jünger, CEO of YQuantum. “Validating our scalable cryoelectronic components on some of the world’s most advanced superconducting quantum processors allows us to push the boundaries of next-generation hardware for large-scale quantum systems — and affirms the performance and quality of our technology.”

Prof. Siddiqi emphasises the importance of collaboration: “Quantum computing needs significant innovation across the stack — from materials and processors to cryogenics and controls — to realize performance advantages on real-world applications,” Siddiqi said. “Our partnership with YQuantum shows how academic labs and companies can work together on cutting-edge technology through the Berkeley Quantum model.”

This collaboration marks a major step forward for YQuantum. By developing and testing our cryogenic solutions alongside one of the world’s foremost quantum labs, we are positioned to deliver scalable hardware solutions that will empower quantum computers to surpass classical capabilities.

Read More Here.

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