Radiatively-cooled quantum microwave amplifiers

• URL: http://arxiv.org/abs/2308.02106v1
• Date: Fri, 4 Aug 2023 02:01:40 GMT
• Title: Radiatively-cooled quantum microwave amplifiers
• Authors: Mingrui Xu, Yufeng Wu, Wei Dai, and Hong X. Tang
• Abstract summary: We demonstrate a quantum microwave amplifier that employs radiative cooling to operate at elevated temperatures. This work represents an important step for realizing scalable microwave quantum technologies.
• Score: 2.7694182767450455
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Superconducting microwave amplifiers are essential for sensitive signal readout in superconducting quantum processors. Typically based on Josephson Junctions, these amplifiers require operation at milli-Kelvin temperatures to achieve quantum-limited performance. Here we demonstrate a quantum microwave amplifier that employs radiative cooling to operate at elevated temperatures. This kinetic-inductance-based parametric amplifier, patterned from a single layer of high-$T_\mathrm{c}$ NbN thin film\cmt{in the form of a nanobridge}, maintains a high gain and meanwhile enables low added noise of 1.3 quanta when operated at 1.5 Kelvin. Remarkably, this represents only a 0.2 quanta increase compared to the performance at a base temperature of 0.1 Kelvin. By uplifting the parametric amplifiers from the mixing chamber without compromising readout efficiency, this work represents an important step for realizing scalable microwave quantum technologies.

Related papers

• A Millimeter-Wave Superconducting Qubit [39.76747788992184]
  A superconducting qubit is scaled up to the millimeter-wave range (near 100 GHz) This has many advantages by removing the dependence on rare $3$He for refrigeration, simplifying cryogenic systems, and providing orders of magnitude higher cooling power. This demonstration of a millimeter-wave quantum emitter offers exciting prospects for enhanced sensitivity thresholds in high-frequency photon detection.
  arXiv  Detail & Related papers  (2024-11-17T20:38:17Z)
• Quantum-enabled continuous microwave-to-optics frequency conversion [6.646547697436899]
  A quantum interface between microwave and optical photons is essential for entangling remote superconducting quantum processors. We present a platform that meets these criteria, utilizing a combination of electrostatic and optomechanical interactions in devices made entirely from crystalline silicon.
  arXiv  Detail & Related papers  (2024-06-04T18:34:01Z)
• Superconducting Qubits Above 20 GHz Operating over 200 mK [39.76747788992184]
  Current superconducting microwave qubits are cooled to extremely low temperatures to avoid sources of decoherence. To operate superconducting qubits at higher temperatures, it is necessary to address both quasiparticle decoherence and dephasing from thermal microwave photons. We fabricate transmons with higher frequencies than previously studied, up to 24 GHz.
  arXiv  Detail & Related papers  (2024-02-05T14:15:22Z)
• Three-Wave Mixing Quantum-Limited Kinetic Inductance Parametric Amplifier operating at 6 Tesla and near 1 Kelvin [0.0]
  We introduce and characterize a Kinetic Inductance Parametric Amplifier built using high-quality NbN superconducting thin films. The KIPA addresses some of the limitations of traditional Josephson-based parametric amplifiers. We demonstrate a quantum-limited amplification (> 20 dB) with a 20 MHz gain-bandwidth product, operational at fields up to 6 Tesla and temperatures as high as 850 mK.
  arXiv  Detail & Related papers  (2023-12-01T17:37:06Z)
• Design and simulation of a transmon qubit chip for Axion detection [103.69390312201169]
  Device based on superconducting qubits has been successfully applied in detecting few-GHz single photons via Quantum Non-Demolition measurement (QND) In this study, we present Qub-IT's status towards the realization of its first superconducting qubit device.
  arXiv  Detail & Related papers  (2023-10-08T17:11:42Z)
• An anti-maser for quantum-limited cooling of a microwave cavity [58.720142291102135]
  We experimentally demonstrate how to generate a state in condensed matter at moderate cryogenic temperatures. This state is then used to efficiently remove microwave photons from a cavity. Such an "anti-maser" device could be extremely beneficial for applications that would normally require cooling to millikelvin temperatures.
  arXiv  Detail & Related papers  (2023-07-24T11:12:29Z)
• An integrated microwave-to-optics interface for scalable quantum computing [47.187609203210705]
  We present a new design for an integrated transducer based on a superconducting resonator coupled to a silicon photonic cavity. We experimentally demonstrate its unique performance and potential for simultaneously realizing all of the above conditions. Our device couples directly to a 50-Ohm transmission line and can easily be scaled to a large number of transducers on a single chip.
  arXiv  Detail & Related papers  (2022-10-27T18:05:01Z)
• Quantum-limited millimeter wave to optical transduction [50.663540427505616]
  Long distance transmission of quantum information is a central ingredient of distributed quantum information processors. Current approaches to transduction employ solid state links between electrical and optical domains. We demonstrate quantum-limited transduction of millimeter-wave (mmwave) photons into optical photons using cold $85$Rb atoms as the transducer.
  arXiv  Detail & Related papers  (2022-07-20T18:04:26Z)
• First design of a superconducting qubit for the QUB-IT experiment [50.591267188664666]
  The goal of the QUB-IT project is to realize an itinerant single-photon counter exploiting Quantum Non Demolition (QND) measurements and entangled qubits. We present the design and simulation of the first superconducting device consisting of a transmon qubit coupled to a resonator using Qiskit-Metal.
  arXiv  Detail & Related papers  (2022-07-18T07:05:10Z)
• High-efficiency microwave-optical quantum transduction based on a cavity electro-optic superconducting system with long coherence time [52.77024349608834]
  Frequency conversion between microwave and optical photons is a key enabling technology to create links between superconducting quantum processors. We propose a microwave-optical platform based on long-coherence-time superconducting radio-frequency (SRF) cavities. We show that the fidelity of heralded entanglement generation between two remote quantum systems is enhanced by the low microwave losses.
  arXiv  Detail & Related papers  (2022-06-30T17:57:37Z)
• A low-noise on-chip coherent microwave source [0.0]
  We report an on-chip device that is based on a Josephson junction coupled to a spiral resonator and is capable of coherent continuous-wave microwave emission. The infidelity of typical quantum gate operations due to the phase noise of this cryogenic 25-pW microwave source is less than 0.1% up to 10-ms evolution times.
  arXiv  Detail & Related papers  (2021-03-13T04:51:53Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.