Two-dimensional Planck spectroscopy for microwave photon calibration

• URL: http://arxiv.org/abs/2308.02389v2
• Date: Fri, 7 Jun 2024 13:19:48 GMT
• Title: Two-dimensional Planck spectroscopy for microwave photon calibration
• Authors: S. Gandorfer, M. Renger, W. K. Yam, F. Fesquet, A. Marx, R. Gross, K. G. Fedorov,
• Abstract summary: We present an improved method for the microwave loss estimation inside of a closed cryogenic system. Our approach is based on Planck's law and makes use of independent temperature sweeps of individual parts of the cryogenic set-up.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum state tomography of weak microwave signals is an important part of many protocols in the field of quantum information processing with superconducting circuits. This step typically relies on an accurate $\textit{in-situ}$ estimation of signal losses in the experimental set-up and requires a careful photon number calibration. Here, we present an improved method for the microwave loss estimation inside of a closed cryogenic system. Our approach is based on Planck's law and makes use of independent temperature sweeps of individual parts of the cryogenic set-up. Using this technique, we can experimentally resolve changes in microwave losses of less than 0.1 dB in the cryogenic environment. We discuss potential applications of this approach for precise characterization of quantum-limited superconducting amplifiers and in other prominent experimental settings.

Related papers

• Measurement of microwave photon correlations at millikelvin with a thermal detector [1.4059056945010209]
  Microwave photons are important carriers of quantum information in many promising platforms for quantum computing. We present a measurement technique with a nanobolometer that directly measures the photon statistics at millikelvin. This technique is poised to serve in fundamental tests of quantum mechanics with microwave photons and function as a scalable readout solution for a quantum information processor.
  arXiv  Detail & Related papers  (2024-07-06T18:15:08Z)
• Metrology of microwave fields based on trap-loss spectroscopy with cold Rydberg atoms [32.73124984242397]
  We demonstrate a new approach for the metrology of microwave fields based on the trap-loss-spectroscopy of cold Rydberg atoms in a magneto-optical trap. Compared to state-of-the-art sensors using room-temperature vapors, cold atoms allow longer interaction times, better isolation from the environment and a reduced Doppler effect.
  arXiv  Detail & Related papers  (2024-04-26T14:30:18Z)
• 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)
• Retrieving space-dependent polarization transformations via near-optimal quantum process tomography [55.41644538483948]
  We investigate the application of genetic and machine learning approaches to tomographic problems. We find that the neural network-based scheme provides a significant speed-up, that may be critical in applications requiring a characterization in real-time. We expect these results to lay the groundwork for the optimization of tomographic approaches in more general quantum processes.
  arXiv  Detail & Related papers  (2022-10-27T11:37:14Z)
• 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)
• Slowing down light in a qubit metamaterial [98.00295925462214]
  superconducting circuits in the microwave domain still lack such devices. We demonstrate slowing down electromagnetic waves in a superconducting metamaterial composed of eight qubits coupled to a common waveguide. Our findings demonstrate high flexibility of superconducting circuits to realize custom band structures.
  arXiv  Detail & Related papers  (2022-02-14T20:55:10Z)
• Near-Field Terahertz Nanoscopy of Coplanar Microwave Resonators [61.035185179008224]
  Superconducting quantum circuits are one of the leading quantum computing platforms. To advance superconducting quantum computing to a point of practical importance, it is critical to identify and address material imperfections that lead to decoherence. Here, we use terahertz Scanning Near-field Optical Microscopy to probe the local dielectric properties and carrier concentrations of wet-etched aluminum resonators on silicon.
  arXiv  Detail & Related papers  (2021-06-24T11:06:34Z)
• 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)
• Microwave Quantum Illumination via Cavity Magnonics [7.251898115709377]
  We propose a hybrid quantum source based on cavity magnonics for microwave QI. Within experimentally accessible parameters, significant microwave-optical quantum resources of interest can be generated.
  arXiv  Detail & Related papers  (2020-11-09T10:20:08Z)
• High-Fidelity Measurement of a Superconducting Qubit using an On-Chip Microwave Photon Counter [0.0]
  We describe an approach to the high-fidelity measurement of a superconducting qubit using an on-chip microwave photon counter. We achieve raw single-shot measurement in excess of 98% across multiple samples using this approach in total measurement times under 500 ns.
  arXiv  Detail & Related papers  (2020-08-05T20:20:40Z)
• Real-time estimation of the optically detected magnetic resonance shift in diamond quantum thermometry [47.50219326456544]
  We investigate the real-time estimation protocols for the frequency shift of optically detected magnetic resonance (ODMR) of nitrogen-vacancy centers in nanodiamonds (NDs) Efficiently integrating multipoint ODMR measurements and ND particle tracking into fluorescence microscopy has recently demonstrated stable monitoring of the temperature inside living animals.
  arXiv  Detail & Related papers  (2020-06-12T01:44:35Z)

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.