Measurement of a superconducting qubit with a microwave photon counter

A. Opremcak, I. V. Pechenezhskiy, C. Howington, B. G. Christensen, M. A. Beck, E. Leonard, J. Suttle, C. Wilen, K. N. Nesterov, G. J. Ribeill, T. Thorbeck, F. Schlenker, M. G. Vavilov, Britton Plourde, R. McDermott

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Fast, high-fidelity measurement is a key ingredient for quantum error correction. Conventional approaches to the measurement of superconducting qubits, involving linear amplification of a microwave probe tone followed by heterodyne detection at room temperature, do not scale well to large system sizes. We introduce an approach to measurement based on a microwave photon counter demonstrating raw single-shot measurement fidelity of 92%. Moreover, the intrinsic damping of the photon counter is used to extract the energy released by the measurement process, allowing repeated high-fidelity quantum nondemolition measurements. Our scheme provides access to the classical outcome of projective quantum measurement at the millikelvin stage and could form the basis for a scalable quantum-to-classical interface.

Original languageEnglish (US)
Pages (from-to)1239-1242
Number of pages4
JournalScience
Volume361
Issue number6408
DOIs
StatePublished - Sep 21 2018

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counters
microwaves
photons
microwave probes
ingredients
shot
damping
room temperature
energy

ASJC Scopus subject areas

  • General

Cite this

Opremcak, A., Pechenezhskiy, I. V., Howington, C., Christensen, B. G., Beck, M. A., Leonard, E., ... McDermott, R. (2018). Measurement of a superconducting qubit with a microwave photon counter. Science, 361(6408), 1239-1242. https://doi.org/10.1126/science.aat4625

Measurement of a superconducting qubit with a microwave photon counter. / Opremcak, A.; Pechenezhskiy, I. V.; Howington, C.; Christensen, B. G.; Beck, M. A.; Leonard, E.; Suttle, J.; Wilen, C.; Nesterov, K. N.; Ribeill, G. J.; Thorbeck, T.; Schlenker, F.; Vavilov, M. G.; Plourde, Britton; McDermott, R.

In: Science, Vol. 361, No. 6408, 21.09.2018, p. 1239-1242.

Research output: Contribution to journalArticle

Opremcak, A, Pechenezhskiy, IV, Howington, C, Christensen, BG, Beck, MA, Leonard, E, Suttle, J, Wilen, C, Nesterov, KN, Ribeill, GJ, Thorbeck, T, Schlenker, F, Vavilov, MG, Plourde, B & McDermott, R 2018, 'Measurement of a superconducting qubit with a microwave photon counter', Science, vol. 361, no. 6408, pp. 1239-1242. https://doi.org/10.1126/science.aat4625
Opremcak A, Pechenezhskiy IV, Howington C, Christensen BG, Beck MA, Leonard E et al. Measurement of a superconducting qubit with a microwave photon counter. Science. 2018 Sep 21;361(6408):1239-1242. https://doi.org/10.1126/science.aat4625
Opremcak, A. ; Pechenezhskiy, I. V. ; Howington, C. ; Christensen, B. G. ; Beck, M. A. ; Leonard, E. ; Suttle, J. ; Wilen, C. ; Nesterov, K. N. ; Ribeill, G. J. ; Thorbeck, T. ; Schlenker, F. ; Vavilov, M. G. ; Plourde, Britton ; McDermott, R. / Measurement of a superconducting qubit with a microwave photon counter. In: Science. 2018 ; Vol. 361, No. 6408. pp. 1239-1242.
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