scholarly journals Engineering entangled microwave photon states through multiphoton interactions between two cavity fields and a superconducting qubit

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Yan-Jun Zhao ◽  
Changqing Wang ◽  
Xiaobo Zhu ◽  
Yu-xi Liu
Keyword(s):  
Superconducting Qubit ◽  
Microwave Photon ◽  
Photon States

scholarly journals Coherent microwave-photon-mediated coupling between a semiconductor and a superconducting qubit

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
P. Scarlino ◽  
D. J. van Woerkom ◽  
U. C. Mendes ◽  
J. V. Koski ◽  
A. J. Landig ◽  
...  
Keyword(s):  
Superconducting Qubit ◽  
Microwave Photon

scholarly journals Generation of nonclassical photon states using a superconducting qubit in a microcavity

2004 ◽  
Vol 67 (6) ◽  
pp. 941-947 ◽  
Author(s):  
Yu-xi Liu ◽  
L. F Wei ◽  
Franco Nori
Keyword(s):  
Superconducting Qubit ◽  
Photon States

scholarly journals Catch and Release of Microwave Photon States

2013 ◽  
Vol 110 (10) ◽  
Author(s):  
Yi Yin ◽  
Yu Chen ◽  
Daniel Sank ◽  
P. J. J. O’Malley ◽  
T. C. White ◽  
...  
Keyword(s):  
Catch And Release ◽  
Microwave Photon ◽  
Photon States

scholarly journals Improved Superconducting Qubit State Readout by Path Interference

2021 ◽  
Vol 38 (11) ◽  
pp. 110303
Author(s):  
Zhiling Wang ◽  
Zenghui Bao ◽  
Yukai Wu ◽  
Yan Li ◽  
Cheng Ma ◽  
...  
Keyword(s):  
Quantum Information Processing ◽  
Quantum Circuit ◽  
Qubit State ◽  
Microwave Cavity ◽  
Single Shot ◽  
Superconducting Qubit ◽  
Constructive Interference ◽  
State Discrimination ◽  
Convenient Approach ◽  
Photon States

High fidelity single shot qubit state readout is essential for many quantum information processing protocols. In superconducting quantum circuit, the qubit state is usually determined by detecting the dispersive frequency shift of a microwave cavity from either transmission or reflection. We demonstrate the use of constructive interference between the transmitted and reflected signal to optimize the qubit state readout, with which we find a better resolved state discrimination and an improved qubit readout fidelity. As a simple and convenient approach, our scheme can be combined with other qubit readout methods based on the discrimination of cavity photon states to further improve the qubit state readout.

Generation of Non-Classical Microwave Photon States in an Inductor–Capacitor Resonator Coupled to a Superconducting Flux Qubit

2010 ◽  
Vol 3 (10) ◽  
pp. 103101 ◽  
Author(s):  
Kosuke Kakuyanagi ◽  
Seiichiro Kagei ◽  
Shiro Saito ◽  
Hayato Nakano ◽  
Kouichi Semba
Keyword(s):  
Microwave Photon ◽  
Photon States ◽  
Flux Qubit ◽  
Superconducting Flux Qubit

scholarly journals High-Fidelity Measurement of a Superconducting Qubit Using an On-Chip Microwave Photon Counter

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
A. Opremcak ◽  
C. H. Liu ◽  
C. Wilen ◽  
K. Okubo ◽  
B. G. Christensen ◽  
...  
Keyword(s):  
High Fidelity ◽  
Superconducting Qubit ◽  
Photon Counter ◽  
Microwave Photon ◽  
On Chip

scholarly journals Measurement of a superconducting qubit with a microwave photon counter

Science ◽  
2018 ◽  
Vol 361 (6408) ◽  
pp. 1239-1242 ◽  
Author(s):  
A. Opremcak ◽  
I. V. Pechenezhskiy ◽  
C. Howington ◽  
B. G. Christensen ◽  
M. A. Beck ◽  
...  
Keyword(s):  
Room Temperature ◽  
Heterodyne Detection ◽  
High Fidelity ◽  
Single Shot ◽  
Superconducting Qubit ◽  
Photon Counter ◽  
Quantum Nondemolition ◽  
Microwave Photon ◽  
Microwave Probe ◽  
Quantum Error

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.

scholarly journals Multiplexing Superconducting Qubit Circuit for Single Microwave Photon Generation

2017 ◽  
Vol 189 (1-2) ◽  
pp. 60-75 ◽  
Author(s):  
R. E. George ◽  
J. Senior ◽  
O.-P. Saira ◽  
J. P. Pekola ◽  
S. E. de Graaf ◽  
...  
Keyword(s):  
Superconducting Qubit ◽  
Microwave Photon ◽  
Photon Generation

Teleportation of Quantum Entangled Two-Photon States in the Presence of Noise

2013 ◽  
Vol 58 (3) ◽  
pp. 268-277
Author(s):  
I.S. Dotsenko ◽  
◽  
R.S. Korobka ◽  
Keyword(s):  
Two Photon ◽  
Photon States
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