Split-gate cavity coupler for silicon circuit quantum electrodynamics

被引：17

作者：

Borjans, F. ^{[1
]}

Croot, X. ^{[1
]}

Putz, S. ^{[1
,3
]}

Mi, X. ^{[1
,4
]}

Quinn, S. M. ^{[2
]}

Pan, A. ^{[2
]}

Kerckhoff, J. ^{[2
]}

Pritchett, E. J. ^{[2
,5
]}

Jackson, C. A. ^{[2
]}

Edge, L. F. ^{[2
]}

Ross, R. S. ^{[2
]}

Ladd, T. D. ^{[2
]}

Borselli, M. G. ^{[2
]}

Gyure, M. F. ^{[2
,6
]}

Petta, J. R. ^{[1
]}

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[2] HRL Labs LLC, 3011 Malibu Canyon Rd, Malibu, CA 90265 USA

[3] Univ Wien, Vienna Ctr Quantum Sci & Technol, Boltzmanngasse 5, A-1090 Vienna, Austria

[4] Google Inc, Santa Barbara, CA 93117 USA

[5] IBM Thomas J Watson Res Ctr, 1101 Kitchawan Rd, Yorktown Hts, NY 10598 USA

[6] Univ Calif Los Angeles, Ctr Quantum Sci & Engn, Box 951594, Los Angeles, CA 90095 USA

来源：

APPLIED PHYSICS LETTERS | 2020年 / 116卷 / 23期

基金：

美国国家科学基金会;

关键词：

ELECTRON; NOISE; QUBIT; SPINS; DOTS;

D O I：

10.1063/5.0006442

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Coherent charge-photon and spin-photon coupling has recently been achieved in silicon double quantum dots (DQDs). Here, we demonstrate a versatile split-gate cavity-coupler that allows more than one DQD to be coupled to the same microwave cavity. Measurements of the cavity transmission as a function of level detuning yield a charge cavity coupling rate of g(c)/2 pi = 58 MHz, a charge decoherence rate of gamma(c)/2 pi = 36 MHz, and a cavity decay rate of kappa/2 pi = 1.2 MHz. The charge cavity coupling rate is in good agreement with device simulations. Our coupling technique can be extended to enable simultaneous coupling of multiple DQDs to the same cavity mode, opening the door to long-range coupling of semiconductor qubits using microwave frequency photons.

引用

页数：4

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