James Palles-Dimmock’s Post

Our latest paper has not 1, not 2, but 3 novel cryo-CMOS ICs! put together to deliver an all-CMOS quantum dot readout experiment. Using GlobalFoundries 22FDX process we demonstrate critical steps towards the development of integrated silicon quantum processors. On the electronic side, we show a LNA with a noise temperature of 4.2K and a 1<>8 wideband RF Multiplexer with a <1.1dB insertion loss. On the quantum device side, we demonstrate charge sensors with single electron resolution and sensitivity approaching the state-of-the-art. This work perfectly showcases the capabilities of Quantum Motion, spanning the design of cryogenic integrated circuits (Alberto Gómez Saiz), the creation of new test setups and techniques (James Kirkman), the design of quantum structures (M.Fernando González Zalba) and their testing (David J. Ibberson). Above all the work is a testament of the close collaboration between Integrated Circuit Design Engineers and with Quantum Engineers happening in Quantum Motion. https://lnkd.in/eqg2dPwf #quantum #cryocmos

Hello dear followers and quantum technology enthusiasts! Count down to the APS March Meeting 2024 organized by the American Physical Society is ticking with less than a week before the start of the conference on Sunday (March 3) in Minneapolis, MN, USA. Come and meet us next week as our colleagues Dr. Félix Beaudoin will give a presentation on Monday (March 4) at 9:00am local time (Central) in the session A47: Superconducting Qubit Software, Design Tools & Theory in room: 200CD. Title of the talk: "Toward multiscale simulations for technology computer-aided design of superconducting qubits". And Dr. Pericles Philippopoulos will give a presentation on Thursday (March 7) at 3:24pm local time (Central) in session W46: Silicon Qubits IV - Characterization and Modeling in the Session # W46 for which please note that the Chairperson is Dr. Beaudoin, in room: 200AB. "Technology computer-aided design simulations of spin qubits in gated double quantum dots". Title of the talk: "Technology computer-aided design simulations of spin qubits in gated double quantum dots", starring our innovative #software QTCAD®. Please check out: https://lnkd.in/g33Wh5k8 and https://lnkd.in/gFacRKwN The performance of our spin-qubit modeling tool QTCAD® will be illustrated through its potential to multiscale from nano scale by studying materials for other quantum technologies (superconducting qubits-based devices) and up to meshed devices simulations implementing double #quantumdots systems, by obtaining charge-stability diagrams (CSDs), tunneling rates, and exchange energies for both electrons or holes within an incremental modeling approach very much compatible with well-known geometries and semiconductor standards, which is essential for quantum devices designers from the industry. See you there! #quantum #quantumcomputing #quantumcomputers #quantumtechnology #quantumnetwork #quantummechanics #quantumcommunication #conference #disruptivetechnologies #qubit #qubits #semiconductors #electronics #engineering #spin #Innovation #MillionQubitEra #usa #minneapolis #physics #quantumtech

Siemens EDA is joining forces with sureCore and Semiwise to revolutionize high-performance computing by developing cryogenic CMOS chips essential for quantum computing. Quantum computing relies on qubits, and cryogenic chips, operating near absolute zero, stabilize quantum states for error-free computations. Semiwise (Semiconductor Technology) brings expertise in cryogenic CMOS circuit designs, creating vital CryoCMOS control chips. sureCore complements with low-power memory solutions, leveraging Siemens' technologies for efficient CryoCMOS control chips tailored for extreme cold. Siemens EDA's Analog FastSPICE platform and Solido™ Design Environment will provide analog/mixed-signal IC design expertise for accurate and reliable cryogenic CMOS circuit development. This collaboration pioneers the future of quantum computing, emphasizing energy efficiency and performance in semiconductor design. #SiemensEDA #sureCore #Semiwise #quantumcomputing #semiconductordesign #cryogenicCMOS #highperformancecomputing #TechCollaboration #SemiconductorTech #InnovationInElectronics #AdvancedCircuitDesign #QuantumTech #HighPerformanceElectronics #FutureOfComputing #CryogenicSemiconductors #ICDesign #SiliconRevolution #SiemensInnovation #SureCoreAdvances #SemiwiseTech #DigitalTransformation

Superconducting flux qubit with ferromagnetic Josephson π-junction operating at zero magnetic field Conventional superconducting flux qubits require the application of a precisely tuned magnetic field to set the operation point at half a flux quantum through the qubit loop, which complicates the on-chip integration of this type of device. It has been proposed that by inducing a π-phase shift in the superconducting order parameter using a precisely controlled nanoscale-thickness superconductor/ferromagnet/superconductor Josephson junction, commonly referred to as π-junction, it is possible to realize a flux qubit operating at zero magnetic flux. Here, the researchers report the realization of a zero-flux-biased flux qubit based on three NbN/AlN/NbN Josephson junctions and a NbN/PdNi/NbN ferromagnetic π-junction. The qubit lifetime is in the microsecond range, which they argue is limited by quasiparticle excitations in the metallic ferromagnet layer. Their results pave the way for developing quantum coherent devices, including qubits and sensors, that utilize the interplay between ferromagnetism and superconductivity. https://lnkd.in/gAEFd2qi

#Fujitsu pursuits its collaboration with QuTech by realizing cryogenic electronic circuits for controlling diamond-based #quantum bits; this newly developed technology signifies a significant step toward the realization of large-scale quantum computers

Siemens EDA is joining forces with sureCore and Semiwise to revolutionize high-performance computing by developing cryogenic CMOS chips essential for quantum computing. Quantum computing relies on qubits, and cryogenic chips, operating near absolute zero, stabilize quantum states for error-free computations. Semiwise (Semiconductor Technology) (Semiconductor Technology) brings expertise in cryogenic CMOS circuit designs, creating vital CryoCMOS control chips. sureCore complements with low-power memory solutions, leveraging Siemens' technologies for efficient CryoCMOS control chips tailored for extreme cold. Siemens EDA's Analog FastSPICE platform and Solido™ Design Environment will provide analog/mixed-signal IC design expertise for accurate and reliable cryogenic CMOS circuit development. This collaboration pioneers the future of quantum computing, emphasizing energy efficiency and performance in semiconductor design. #SiemensEDA #sureCore #Semiwise #quantumcomputing #semiconductordesign #cryogenicCMOS #highperformancecomputing #TechCollaboration #SemiconductorTech #InnovationInElectronics #AdvancedCircuitDesign #QuantumTech #HighPerformanceElectronics #FutureOfComputing #CryogenicSemiconductors #ICDesign #SiliconRevolution #SiemensInnovation #SureCoreAdvances #SemiwiseTech #DigitalTransformation

Recent Article: Enhancement of photoexcited carrier lifetime in an InGaAs/GaAsP wire-on-well quantum structure investigated by excitation-power-dependent photoluminescence measurements #nextnano #simulation #software #tcad #semiconductor

🌠 Here's why photonic integrated circuits (#PICs) transform quantum applications (innovation managers, take notes!): 📈 Scalability: Unlike discrete optical systems, #quantum photonic chips are integrated units. This streamlined production enables seamless scalability, laying the material groundwork for large-scale quantum computing and communication networks. ⚓ Stability and robustness: Built into a robust solid-state platform, quantum photonic chips enable increased stability against vibrations and temperature fluctuations. This drastically reduces the need for big, expensive methods of environmental isolation, thus improving user accessibility. 🔗 High levels of integration: With integrated light sources, detectors, and in/out couplings, PICs make it possible to build complex, all-in-one quantum systems that are relatively easy to connect and control. 🔆 Low loss : Silicon nitride PICs are excellent for their ultra-low optical losses, translating to higher efficiency. Our #TriPleX® silicon nitride platform combines all of the above. With single Kelvins operability, easy integration of on-chip light sources, scalable volumes, robust assembly, and low propagation and interface losses, our chips can drive your quantum #photonic business 🤝 💪 Together with our application partner QuiX Quantum, we commit to support our customers through broader compatibility, highly qualified quantum building blocks, and seamless integration, from design to device. ➡️Read more about quantum PIC & modules development at LioniX: https://lnkd.in/enzDgXdw

Stop by the booth to see advanced solutions for #quantum computing development, such as calibration standards and phase matched cable assemblies optimized for cryogenic temperatures, high-performance peak power #sensors that can characterize quantum pulse profiles, and multi-channel #RF synthesizers that feature independently controlled, phase coherent channels.

𝗨𝗻𝗶𝗳𝗶𝗲𝗱 𝗹𝗮𝘀𝗲𝗿 𝘀𝘁𝗮𝗯𝗶𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗶𝘀𝗼𝗹𝗮𝘁𝗶𝗼𝗻 𝗼𝗻 𝗮 𝘀𝗶𝗹𝗶𝗰𝗼𝗻 𝗰𝗵𝗶𝗽. Rapid progress in photonics has led to an explosion of integrated devices that promise to deliver the same performance as table-top technology at the nanoscale, heralding the next generation of optical communications, sensing and metrology, and quantum technologies. However, the challenge of co-integrating the multiple components of high-performance laser systems has left application of these nanoscale devices thwarted by bulky laser sources that are orders of magnitude larger than the devices themselves. Here, the authors show that the two main components for high-performance lasers—noise reduction and isolation—can be sourced simultaneously from a single, passive, CMOS-compatible nanophotonic device, eliminating the need to combine incompatible technologies. To realize this, the authors take advantage of both the long photon lifetime and the non-reciprocal Kerr nonlinearity of a high-quality-factor silicon nitride ring resonator to self-injection lock a semiconductor laser chip while also providing isolation. The authorsalso identify a previously unappreciated power regime limitation of current on-chip laser architectures, which the present system overcomes. Using the present device, which the authors term a unified laser stabilizer, the authors demonstrate an on-chip integrated laser system with built-in isolation and noise reduction that operates with turnkey reliability. This approach departs from efforts to directly miniaturize and integrate traditional laser system components and serves to bridge the gap to fully integrated optical technologies. https://lnkd.in/gjijcVQ6