One-step generation of continuous-variable quadripartite cluster states in a circuit QED system

Yang, Zhipeng; Li, Zhen; Ma, Shengli; Li, Fuli

doi:10.1103/physreva.96.012327

Cited by 13 publications

(6 citation statements)

References 72 publications

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“…The time-dependent coupling can be realized by modulating the inductance of the SQUID, which will change the boundary condition of the cavities and their interaction. [40,41] transmon 1 transmon 2 SQUID cavity a 1 cavity a 2 Fig. 1.…”

Section: Model and Solutionmentioning

confidence: 99%

Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator*

Mu¹,

Lin²

2020

Chinese Phys. B

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We investigate the non-Markovian effects on the entanglement transfer to the distant non-interacting atom qubits, which are embedded in a coupled superconducting resonator. The master equation governing the dynamics of the system is derived by the non-Markovian quantum state diffusion (NMQSD) method. Based on the solution, we show that the memory effect of the environment can lead to higher entanglement revival and make the entanglement last for a longer time. That is to say, the non-Markovian environment can enhance the entanglement transfer. It is also found that the maximum entanglement transferred to distant atoms can be modified by appropriately selecting the frequency of the modulated inter-cavity coupling. Moreover, with the initial anti-correlated state, the entanglement between the cavity fields can be almost completely transferred to the separated atoms. Lastly, we show that the memory effect has a significant impact on the generation of entanglement from the initial non-entangled states.

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Section: Model and Solutionmentioning

confidence: 99%

Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator*

Mu¹,

Lin²

2020

Chinese Phys. B

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“…The superconducting platform is considered as one of the most promising for building universal quantum computers, as exemplified by, e.g., commercial devices, including IBM's [46][47][48][49] and Google's [50,51] superconducting processors. A series of theoretical and experimental protocols for generating cluster states of superconducting qubits have been presented in [19][20][21][52][53][54][55][56][57][58][59], as well as theoretical protocols [2,29] for one-way logic gates in superconducting processors. However, experimental demonstrations of one-way quantum computing in superconducting systems were lacking until very recently [60,61].…”

Section: Introductionmentioning

confidence: 99%

Deterministic one-way logic gates on a cloud quantum computer

Yang

Baishya

et al. 2022

Phys. Rev. A

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One-way quantum computing is a promising candidate for fault-tolerant quantum computing. Here, we propose protocols to realize a deterministic one-way controlled-NOT (CNOT) gate and one-way X rotations on current quantum-computing platforms. By applying a delayed-choice scheme, we overcome a limit of most currently available quantum computers, which are unable to implement further operations on measured qubits or operations conditioned on measurement results from other qubits. Moreover, we decrease the error rate of the one-way logic gates, compared to the original protocol using local operations and classical communication. In addition, we apply our deterministic one-way CNOT gate in the Deutsch-Jozsa algorithm to show the feasibility of our proposal. We demonstrate all these one-way gates and algorithms by running experiments on the cloud quantum-computing platform IBM Quantum Experience.

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“…A series of theoretical and experimental protocols for generating cluster states of superconducting qubits have been presented in Refs. [14][15][16][45][46][47][48][49][50][51][52], as well as theoretical protocols [2,24] for one-way logic gates in superconducting processors. However, experimental demonstrations of one-way quantum computing in superconducting systems were lacking until very recently [34,35].…”

Section: Introductionmentioning

confidence: 99%

Deterministic one-way logic gates on a cloud quantum computer

Yang,

Baishya,

et al. 2021

Preprint

Self Cite

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One-way quantum computing is a promising candidate for fault-tolerant quantum computing. Here, we propose new protocols to realize a deterministic one-way CNOT gate and one-way Xrotations on quantum-computing platforms. By applying a delayed-choice scheme, we overcome a limit of most currently available quantum computers, which are unable to implement further operations on measured qubits or operations conditioned on measurement results from other qubits. Moreover, we decrease the error rate of the one-way logic gates, compared to the original protocol using local operations and classical communication (LOCC). In addition, we apply our deterministic one-way CNOT gate in the Deutsch-Jozsa algorithm to show the feasibility of our proposal. We demonstrate all these one-way gates and algorithms by running experiments on the cloud quantumcomputing platform IBM Quantum Experience.

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One-step generation of continuous-variable quadripartite cluster states in a circuit QED system

Cited by 13 publications

References 72 publications

Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator*

Non-Markovian entanglement transfer to distant atoms in a coupled superconducting resonator*

Deterministic one-way logic gates on a cloud quantum computer

Deterministic one-way logic gates on a cloud quantum computer

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