scholarly journals Three-qubit direct dispersive parity measurement with tunable coupling qubits

2017 ◽  
Vol 96 (21) ◽  
Author(s):  
A. Ciani ◽  
D. P. DiVincenzo
Keyword(s):  
Parity Measurement ◽  
Tunable Coupling

scholarly journals Physical model of continuous two-qubit parity measurement in a cavity-QED network

2009 ◽  
Vol 79 (2) ◽  
Author(s):  
Joseph Kerckhoff ◽  
Luc Bouten ◽  
Andrew Silberfarb ◽  
Hideo Mabuchi
Keyword(s):  
Physical Model ◽  
Cavity Qed ◽  
Parity Measurement

Synchronous identification and successive detection of multiple traces with tunable coupling oscillators

2022 ◽  
Vol 166 ◽  
pp. 108395
Author(s):  
Cao Xia ◽  
Dong F. Wang ◽  
Jie Song ◽  
Takahito Ono ◽  
Toshihiro Itoh ◽  
...  
Keyword(s):  
Tunable Coupling

Quantum State Transfer via Parity Measurement

2007 ◽  
Vol 47 (5) ◽  
pp. 1294-1299 ◽  
Author(s):  
Jie Song ◽  
Yan Xia ◽  
He-Shan Song
Keyword(s):  
Quantum State ◽  
Quantum State Transfer ◽  
State Transfer ◽  
Parity Measurement

Tunable coupling of spin ensembles

2018 ◽  
Vol 43 (3) ◽  
pp. 466 ◽  
Author(s):  
Feng-Yang Zhang ◽  
Chui-Ping Yang
Keyword(s):  
Tunable Coupling

scholarly journals Qubit parity measurement by parametric driving in circuit QED

2018 ◽  
Vol 4 (11) ◽  
pp. eaau1695 ◽  
Author(s):  
Baptiste Royer ◽  
Shruti Puri ◽  
Alexandre Blais
Keyword(s):  
Error Correction ◽  
Quantum Electrodynamics ◽  
High Amplitude ◽  
Quantum Error Correction ◽  
Parametric Oscillation ◽  
Circuit Qed ◽  
Experimental Implementation ◽  
Parity Measurement ◽  
Surface Code ◽  
Quantum Error

Multiqubit parity measurements are essential to quantum error correction. Current realizations of these measurements often rely on ancilla qubits, a method that is sensitive to faulty two-qubit gates and that requires notable experimental overhead. We propose a hardware-efficient multiqubit parity measurement exploiting the bifurcation dynamics of a parametrically driven nonlinear oscillator. This approach takes advantage of the resonator’s parametric oscillation threshold, which depends on the joint parity of dispersively coupled qubits, leading to high-amplitude oscillations for one parity subspace and no oscillation for the other. We present analytical and numerical results for two- and four-qubit parity measurements, with high-fidelity readout preserving the parity eigenpaces. Moreover, we discuss a possible realization that can be readily implemented with the current circuit quantum electrodynamics (QED) experimental toolbox. These results could lead to substantial simplifications in the experimental implementation of quantum error correction and notably of the surface code.

scholarly journals Loss-tolerant parity measurement for distant quantum bits

2017 ◽  
Vol 95 (3) ◽  
Author(s):  
Alain Sarlette ◽  
Mazyar Mirrahimi
Keyword(s):  
Quantum Bits ◽  
Parity Measurement
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