Deterministic generation of an on-demand Fock state

Xia, Keyu; Brennen, Gavin K.; Ellinas, Demosthenes; Twamley, J.

doi:10.1364/oe.20.027198

Cited by 13 publications

(3 citation statements)

References 50 publications

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“…In 2010, Togan et al [34] realized the quantum entanglement generation of an optical photon and an NV center. Photon Fock states on-demand can be implemented in a low-temperature solid-state quantum system with an NV center in a nano-diamond coupled to a nearby high-Q optical cavity [35].…”

Section: Introductionmentioning

confidence: 99%

Generation and complete nondestructive analysis of hyperentanglement assisted by nitrogen-vacancy centers in resonators

Liu

Zhang

2015

Phys. Rev. A

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We present two efficient schemes for the deterministic generation and the complete nondestructive analysis of hyperentangled Bell states in both the polarization and spatial-mode degrees of freedom (DOFs) of two-photon systems, assisted by the nitrogen-vacancy (NV) centers in diamonds coupled to microtoroidal resonators as a result of cavity quantum electrodynamics (QED). With the input-output process of photons, two-photon polarization-spatial hyperentangled Bell states can be generated in a deterministic way and their complete nondestructive analysis can be achieved. These schemes can be generalized to generate and analyze hyperentangled Greenberger-Horne-Zeilinger states of multi-photon systems as well. Compared with previous works, these two schemes relax the difficulty of their implementation in experiment as it is not difficult to obtain the π phase shift in single-sided NV-cavity systems. Moreover, our schemes do not require that the transmission for the uncoupled cavity is balanceable with the reflectance for the coupled cavity. Our calculations show that these schemes can reach a high fidelity and efficiency with current technology, which may be a benefit to long-distance high-capacity quantum communication with two DOFs of photon systems.

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Section: Introductionmentioning

confidence: 99%

Generation and complete nondestructive analysis of hyperentanglement assisted by nitrogen-vacancy centers in resonators

Liu

Zhang

2015

Phys. Rev. A

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“…It can be an InAs self-assembled QD grown on the silicondioxide/silicon substrates [62][63][64] Initialization of the QD in either ground state has been experimentally demonstrated with a near-unity probability [65][66][67]. The polarization-selective transition, |1/2 ↔ |3/2 or | − 1/2 ↔ | − 3/2 , can also be tuned to have different energies via the optical Stark effect (OSE) [68][69][70][71][72][73]. For simplicity, we assume that the QD is completely populated in the spin up ground state, or only allows the σ + −polarized transition, enabled by the OSE.…”

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confidence: 99%

On-chip chiral single-photon interface: Isolation and unidirectional emission

Tang

Zhang

et al. 2019

Phys. Rev. A

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Chiral quantum systems have received intensive attention in fundamental physics and applications in quantum information processing including optical isolation and photon unidirectional emission. Here, we design an onchip emitter-resonator system with strong chiral light-matter interaction for a chiral single-photon interface. The system includes a microring resonator with a strong evanescent field and a near-unity optical chirality along both of the whole outside and inside walls, allowing a strong and chiral coupling of the Whispering-Gallery mode to a quantum emitter. By initializing a quantum dot in a specific spin ground state or shifting the transition energy with a polarization-selective optical Stark effect, we show a broadband optical isolation at the singlephoton level over several GHz. Furthermore, a quantum emitter chirally coupling to the microring resonator can emit single photons unidirectionally. Our protocol paves a way to realize multifunctional chiral single-photon interface in on-chip quantum information processing and quantum networks.

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“…We prepare the ancillary mode in the Fock state |n = 1 and evolve by Ĥψ , such that e −i Ĥψ π/2 |G |n = 1 = −i f † |G |n = 0 and we have the excited state up to a phase with no entanglement left between the ancilla and the register. Note the Fock state |n = 1 is a non-Gaussian state, however it can be prepared efficiently by a variety of techniques (see [22] and references therein).…”

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confidence: 99%

Multiscale quantum simulation of quantum field theory using wavelets

et al. 2015

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A successful approach to understand field theories is to resolve the physics into different length or energy scales using the renormalization group framework. We propose a quantum simulation of quantum field theory which encodes field degrees of freedom in a wavelet basis-a multi-scale description of the theory. Since wavelets are compact wavefunctions, this encoding allows for quantum simulations to create particle excitations with compact support and provides a natural way to associate observables in the theory to finite resolution detectors. We show that the wavelet basis is well suited to compute subsystem entanglement entropy by dividing the field into contributions from short-range wavelet degrees of freedom and long-range scale degrees of freedom, of which the latter act as renormalized modes which capture the essential physics at a renormalization fixed point.

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Deterministic generation of an on-demand Fock state

Cited by 13 publications

References 50 publications

Generation and complete nondestructive analysis of hyperentanglement assisted by nitrogen-vacancy centers in resonators

Generation and complete nondestructive analysis of hyperentanglement assisted by nitrogen-vacancy centers in resonators

On-chip chiral single-photon interface: Isolation and unidirectional emission

Multiscale quantum simulation of quantum field theory using wavelets

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