scholarly journals One-step implementation of a multi-target-qubit controlled phase gate with cat-state qubits in circuit QED

2018 ◽  
Vol 14 (2) ◽  
Author(s):  
You-Ji Fan ◽  
Zhen-Fei Zheng ◽  
Yu Zhang ◽  
Dao-Ming Lu ◽  
Chui-Ping Yang
Keyword(s):  
Circuit Qed ◽  
One Step ◽  
Phase Gate ◽  
Controlled Phase Gate ◽  
Target Qubit

One-step implementation of a multi-target-qubit controlled phase gate in a multi-resonator circuit QED system

2018 ◽  
Vol 17 (9) ◽  
Author(s):  
Tong Liu ◽  
Bao-Qing Guo ◽  
Yang Zhang ◽  
Chang-Shui Yu ◽  
Wei-Ning Zhang
Keyword(s):  
Circuit Qed ◽  
One Step ◽  
Phase Gate ◽  
Controlled Phase Gate ◽  
Target Qubit

One-step construction of the multiple-qubit Rydberg controlled-phase gate

2018 ◽  
Vol 98 (3) ◽  
Author(s):  
S. L. Su ◽  
H. Z. Shen ◽  
Erjun Liang ◽  
Shou Zhang
Keyword(s):  
One Step ◽  
Phase Gate ◽  
Controlled Phase Gate

scholarly journals Proposal for a destructive controlled phase gate using linear optics

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
S. U. Shringarpure ◽  
J. D. Franson
Keyword(s):  
Linear Optics ◽  
Practical Applications ◽  
Control Qubit ◽  
Probability Of Success ◽  
Average Probability ◽  
Phase Gate ◽  
Controlled Phase Gate ◽  
Target Qubit

AbstractKnill, Laflamme, and Milburn showed that linear optics techniques could be used to implement a nonlinear sign gate. They also showed that two of their nonlinear sign gates could be combined to implement a controlled-phase gate, which has a number of practical applications. Here we describe an alternative implementation of a controlled-phase gate for a single-rail target qubit that only requires the use of a single nonlinear sign gate. This gives a much higher average probability of success when the required ancilla photons are generated using heralding techniques. This implementation of a controlled-phase gate destroys the control qubit, which is acceptable in a number of applications where the control qubit would have been destroyed in any event, such as in a postselection process.

ONE-STEP IMPLEMENTATION OF CONTROLLED PHASE GATES FOR THREE ATOMS TRAPPED IN SEPARATED CAVITIES

2012 ◽  
Vol 10 (04) ◽  
pp. 1250052
Author(s):  
DAO-MING LU ◽  
SHI-BIAO ZHENG
Keyword(s):  
Optical Fibers ◽  
Rabi Oscillation ◽  
Selective Excitation ◽  
Photon Exchange ◽  
Qubit System ◽  
One Step ◽  
Phase Gate ◽  
Controlled Phase Gate ◽  
Conditional Phase Shift ◽  
Conditional Phase

A scheme is proposed for implementing the controlled phase gate for three atoms trapped in separated cavities coupled by optical fibers. The energy-level distances of the qubit system become unequal as a consequence of the virtual photon exchange between the atomic qubits, which allows the selective excitation of the qubit system in the symmetric Dicke subspace. The conditional phase shift is produced after a single selective Rabi oscillation and the operation is insensitive to cavity loss and fiber decay.

Constructing multi-target controlled phase gate in circuit QED and its applications

2019 ◽  
Vol 127 (5) ◽  
pp. 50002 ◽  
Author(s):  
Jin-Xuan Han ◽  
Jin-Lei Wu ◽  
Yan Wang ◽  
Yan Xia ◽  
Jie Song ◽  
...  
Keyword(s):  
Circuit Qed ◽  
Phase Gate ◽  
Controlled Phase Gate

1→N quantum controlled phase gate realized in a circuit QED system

2012 ◽  
Vol 55 (8) ◽  
pp. 1422-1426 ◽  
Author(s):  
GuiLong Gao ◽  
GenChang Cai ◽  
ShouSheng Huang ◽  
LongYing Tang ◽  
WenJing Gu ◽  
...  
Keyword(s):  
Circuit Qed ◽  
Phase Gate ◽  
Controlled Phase Gate
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