High‐Fidelity Hybrid Quantum Gates between a Flying Photon and Diamond Nitrogen‐Vacancy Centers Assisted by Low‐<i>Q</i> Single‐Sided Cavities

Li, Ming; Lin, Jiaying; Zhang, M.

doi:10.1002/andp.201800312

Cited by 10 publications

(4 citation statements)

References 82 publications

(92 reference statements)

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“…As an alternative to WGM microtoroid cavities, single-sided cavities can be utilized for realizing the interactions required in our setups. Single-and double-sided cavities have been recently attracted attention for realizing spin-photon interactions [73][74][75][76][77]. On the other hand, due to their relatively low Q-factors, a major issue in using single-sided optical cavities is that photon losses and effective weak measurements can decrease the fidelity of the prepared state.…”

Section: Discussionmentioning

confidence: 99%

Deterministic preparation of W states via spin-photon interactions

Ozaydin,

Yesilyurt,

Bugu

et al. 2021

Preprint

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Section: Discussionmentioning

confidence: 99%

Deterministic preparation of W states via spin-photon interactions

Ozaydin,

Yesilyurt,

Bugu

et al. 2021

Preprint

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“…Achieving ultra-high quality factor, microtoroid resonators with whispering gallery modes are promising [60][61][62][63] . Single-sided or double-sided cavities even with small Q-factors 64,65 are also shown to be candidates for realizing atom-photon or spin-photon interactions with high success rate, enabling myriad quantum information processing tasks from entanglement generation to quantum teleportation (see Refs. 58,59,66,67 and references therein).…”

Section: Discussionmentioning

confidence: 99%

Surpassing the classical limit in magic square game with distant quantum dots coupled to optical cavities

Buğu

Özaydın

Kodera

2020

Sci Rep

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The emergence of quantum technologies is heating up the debate on quantum supremacy, usually focusing on the feasibility of looking good on paper algorithms in realistic settings, due to the vulnerability of quantum systems to myriad sources of noise. In this vein, an interesting example of quantum pseudo-telepathy games that quantum mechanical resources can theoretically outperform classical resources is the Magic Square game (MSG), in which two players play against a referee. Due to noise, however, the unit winning probability of the players can drop well below the classical limit. Here, we propose a timely and unprecedented experimental setup for quantum computation with quantum dots inside optical cavities, along with ancillary photons for realizing interactions between distant dots to implement the MSG. Considering various physical imperfections of our setup, we first show that the MSG can be implemented with the current technology, outperforming the classical resources under realistic conditions. Next, we show that our work gives rise to a new version of the game. That is, if the referee has information on the physical realization and strategy of the players, he can bias the game through filtered randomness, and increase his winning probability. We believe our work contributes to not only quantum game theory, but also quantum computing with quantum dots.

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“…In 2012, by utilizing the practical interaction between the single photon and the atomcavity system, Li et al [60] proposed the robust-fidelity entangling gate in which the computation errors coming from the realistic atom-cavity parameters were wiped out. In recent years, much attention has been attracted to the research in highfidelity (hyperparallel) quantum gates via different methods [32,[61][62][63][64][65][66][67][68][69][70][71].…”

Section: Introductionmentioning

confidence: 99%

High-Fidelity Photonic Three-Degree-of-Freedom Hyperparallel Controlled-Phase-Flip Gate

Wang

Wei²

2022

Front. Phys.

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Encoding computing qubits in multiple degrees of freedom (DOFs) of a photonic system allows hyperparallel quantum computation to enlarge channel capacity with less quantum resource, and constructing high-fidelity hyperparallel quantum gates is always recognized as a fundamental prerequisite for hyperparallel quantum computation. Herein, we propose an approach for implementing a high-fidelity photonic hyperparallel controlled-phase-flip (CPF) gate working with polarization, spatial-mode, and frequency DOFs, through utilizing the practical interaction between the single photon and the diamond nitrogen vacancy (NV) center embedded in the cavity. Particularly, the desired output state of the gate without computation errors coming from the practical interaction is obtained, and the robust fidelity is guaranteed in the nearly realistic condition. Meanwhile, the requirement for the experimental realization of the gate is relaxed. In addition, this approach can be generalized to complete the high-fidelity photonic three-DOF hyperparallel CPFN gate and parity-check gate. These interesting features may make the present scheme have potential for applications in the hyperparallel quantum computation.

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High‐Fidelity Hybrid Quantum Gates between a Flying Photon and Diamond Nitrogen‐Vacancy Centers Assisted by Low‐Q Single‐Sided Cavities

Cited by 10 publications

References 82 publications

Deterministic preparation of W states via spin-photon interactions

Deterministic preparation of W states via spin-photon interactions

Surpassing the classical limit in magic square game with distant quantum dots coupled to optical cavities

High-Fidelity Photonic Three-Degree-of-Freedom Hyperparallel Controlled-Phase-Flip Gate

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