# Robust-fidelity hyperparallel controlled-phase-flip gate through microcavities

@article{Wei2020RobustfidelityHC, title={Robust-fidelity hyperparallel controlled-phase-flip gate through microcavities}, author={Hai‐Rui Wei and Yanzhen Zheng and Ming Hua and Guo Fu Xu}, journal={arXiv: Quantum Physics}, year={2020} }

Hyperparallel quantum information processing outperforms its traditional parallel one in terms of channel capacity, low loss rate, and processing speed. We present a way for implementing a robust hyper-parallel optical controlled-phase-flip gate through microcavities. The gate acts on polarization and spatial degrees of freedom (DOFs) simultaneously, and the incomplete and undesired interactions between photons and quantum dots are prevented. Interestingly, the unity fidelity of the gate can be…

## 2 Citations

Complete Hyperentangled Bell States Analysis For Polarization‐Spatial‐Time‐Bin Degrees of Freedom with Unity Fidelity

- PhysicsAnnalen der Physik
- 2022

Hyperentangled states can outperform their classical counterparts on solving certain tasks. Here, a simplified scheme for completely distinguishing two‐photon hyperentangled Bell states in…

## References

SHOWING 1-10 OF 41 REFERENCES

Hyper-parallel Toffoli gate on three-photon system with two degrees of freedom assisted by single-sided optical microcavities.

- PhysicsOptics express
- 2016

This work presents a compact and scalable quantum circuit to determinately implement a hyper-parallel controlled-controlled-phase-flip (hyper-C2PF) gate in a three-photon system in both the polarization and spatial DOFs.

Nearly deterministic linear optical controlled-NOT gate.

- PhysicsPhysical review letters
- 2004

The key element of this gate is nondemolition detectors that use a weak cross-Kerr nonlinearity effect to conditionally generate a phase shift on a coherent probe if a photon is present in the signal mode.

Robust hybrid hyper-controlled-not gates assisted by an input-output process of low-Q cavities.

- PhysicsOptics express
- 2019

This work presents some flexible and adjustable schemes for hybrid hyper-controlled-not (hyper-CNOT) gates assisted by low-Q cavities, on the two-photon systems in both the spatial-mode and the polarization DOFs, which consume less quantum resource and are more robust against photonic dissipation noise.

Hyperparallel optical quantum computation assisted by atomic ensembles embedded in double-sided optical cavities

- Physics
- 2016

We propose an effective, scalable, hyperparallel photonic quantum computation scheme in which photonic qubits are hyperencoded both in the spatial degrees of freedom (DOF) and the polarization DOF of…

Implementing a Two‐Photon Three‐Degrees‐of‐Freedom Hyper‐Parallel Controlled Phase Flip Gate Through Cavity‐Assisted Interactions

- PhysicsAnnalen der Physik
- 2020

Hyper‐parallel quantum information processing is a promising and beneficial research field. Herein, a method to implement a hyper‐parallel controlled‐phase‐flip (hyper‐CPF) gate for frequency‐,…

Parallel Implementation of High-Fidelity Multiqubit Gates with Neutral Atoms.

- PhysicsPhysical review letters
- 2019

The controlled-phase gate is realized, enacted by a novel, fast protocol involving only global coupling of two qubits to Rydberg states, and a proof-of-principle implementation of the three-qubit Toffoli gate, in which two control atoms simultaneously constrain the behavior of one target atom.

Linear optical quantum computing in a single spatial mode.

- PhysicsPhysical review letters
- 2013

This work presents a scheme for linear optical quantum computing using time-bin-encoded qubits in a single spatial mode, providing a sufficient set of operations for universal quantum computing with the Knill-Laflamme-Milburn scheme.

Scalable photonic quantum computation through cavity-assisted interactions.

- PhysicsPhysical review letters
- 2004

This work proposes a scheme for scalable photonic quantum computation based on cavity-assisted interaction between single-photon pulses that is robust to practical noise and experimental imperfections in current cavity-QED setups.

Hyperparallel transistor, router and dynamic random access memory with unity fidelities.

- PhysicsOptics express
- 2019

The hyperparallel constructions are based on polarization and spatial degrees of freedom of the photon to increase the parallel efficiency, improve the capacity of channel, save the quantum resources, reduce the operation time, and decrease the environment noises.