Simple cavity-QED two-bit universal quantum logic gate: The principle and expected performances

1995 ◽  
Vol 52 (5) ◽  
pp. 3554-3559 ◽  
Author(s):  
P. Domokos ◽  
J. M. Raimond ◽  
M. Brune ◽  
S. Haroche
Keyword(s):  
Quantum Logic ◽  
Cavity Qed ◽  
Logic Gate ◽  
Quantum Logic Gate ◽  
Universal Quantum

scholarly journals On the Design of Molecular Excitonic Circuits for Quantum Computing: The Universal Quantum Gates

2019 ◽  
Author(s):  
Maria Castellanos ◽  
Amro Dodin ◽  
Adam Willard
Keyword(s):  
Quantum Computing ◽  
Quantum Logic ◽  
Unitary Transformation ◽  
Design Space ◽  
Logic Gate ◽  
Quantum Gates ◽  
Dye Molecules ◽  
Quantum Logic Gate ◽  
Universal Quantum ◽  
Two Level Systems

This manuscript presents a theoretical strategy for encoding elementary quantum computing operations into the design of molecular excitonic circuits. Specifically, we show how the action of a unitary transformation of coupled two-level systems can be equivalently represented by the evolution of an exciton in a coupled network of dye molecules. We apply this strategy to identify the geometric parameters for circuits that perform universal quantum logic gate operations. We quantify the design space for these circuits and how their performance is affected by environmental noise.

scholarly journals On the Design of Molecular Excitonic Circuits for Quantum Computing: The Universal Quantum Gates

2019 ◽  
Author(s):  
Maria Castellanos ◽  
Amro Dodin ◽  
Adam Willard
Keyword(s):  
Quantum Computing ◽  
Quantum Logic ◽  
Unitary Transformation ◽  
Design Space ◽  
Logic Gate ◽  
Quantum Gates ◽  
Dye Molecules ◽  
Quantum Logic Gate ◽  
Universal Quantum ◽  
Two Level Systems

This manuscript presents a theoretical strategy for encoding elementary quantum computing operations into the design of molecular excitonic circuits. Specifically, we show how the action of a unitary transformation of coupled two-level systems can be equivalently represented by the evolution of an exciton in a coupled network of dye molecules. We apply this strategy to identify the geometric parameters for circuits that perform universal quantum logic gate operations. We quantify the design space for these circuits and how their performance is affected by environmental noise.

scholarly journals Modal and polarization qubits in Ti:LiNbO_3 photonic circuits for a universal quantum logic gate

2010 ◽  
Vol 18 (19) ◽  
pp. 20475 ◽  
Author(s):  
Mohammed F. Saleh ◽  
Giovanni Di Giuseppe ◽  
Bahaa E. A. Saleh ◽  
Malvin Carl Teich
Keyword(s):  
Quantum Logic ◽  
Logic Gate ◽  
Photonic Circuits ◽  
Quantum Logic Gate ◽  
Universal Quantum

scholarly journals Methodology for quantum logic gate construction

2000 ◽  
Vol 62 (5) ◽  
Author(s):  
Xinlan Zhou ◽  
Debbie W. Leung ◽  
Isaac L. Chuang
Keyword(s):  
Quantum Logic ◽  
Logic Gate ◽  
Quantum Logic Gate

Realizing an N-two-qubit quantum logic gate in a cavity QED with nearest qubit--qubit interaction

2016 ◽  
Vol 16 (5&6) ◽  
pp. 465-482
Author(s):  
Taoufik Said ◽  
Abdelhaq Chouikh ◽  
Karima Essammouni ◽  
Mohamed Bennai
Keyword(s):  
Quantum Logic ◽  
Cavity Qed ◽  
Logic Gate ◽  
Operation Time ◽  
Logic Gates ◽  
Initial State ◽  
Gate Operation ◽  
Quantum Logic Gates ◽  
Current State ◽  
Phase Gate

We propose an effective way for realizing a three quantum logic gates (NTCP gate, NTCP-NOT gate and NTQ-NOT gate) of one qubit simultaneously controlling N target qubits based on the qubit-qubit interaction. We use the superconducting qubits in a cavity QED driven by a strong microwave field. In our scheme, the operation time of these gates is independent of the number N of qubits involved in the gate operation. These gates are insensitive to the initial state of the cavity QED and can be used to produce an analogous CNOT gate simultaneously acting on N qubits. The quantum phase gate can be realized in a time (nanosecond-scale) much smaller than decoherence time and dephasing time (microsecond-scale) in cavity QED. Numerical simulation under the influence of the gate operations shows that the scheme could be achieved efficiently within current state-of-the-art technology.

scholarly journals A quantum logic gate between a solid-state quantum bit and a photon

2013 ◽  
Vol 7 (5) ◽  
pp. 373-377 ◽  
Author(s):  
Hyochul Kim ◽  
Ranojoy Bose ◽  
Thomas C. Shen ◽  
Glenn S. Solomon ◽  
Edo Waks
Keyword(s):  
Solid State ◽  
Quantum Logic ◽  
Logic Gate ◽  
Quantum Logic Gate ◽  
Quantum Bit
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