Deterministic Enhancement of Coherent Photon Generation from a Nitrogen-Vacancy Center in Ultrapure Diamond

Riedel, Daniel; Söllner, Immo; Shields, Brendan; Starosielec, Sebastian; Appel, Patrick; Neu, Elke; Maletinsky, Patrick; Warburton, Richard J.

doi:10.1103/physrevx.7.031040

Cited by 173 publications

(228 citation statements)

References 52 publications

Supporting

Mentioning

222

Contrasting

Order By: Relevance

“…The ultimate goal of on‐chip high‐bandwidth quantum state transfer also depends on the quality of microfabricated photonic elements and the advances in diamond‐based device engineering regarding transmission loss reduction and device footprint shrinking. The well‐developed techniques for NV − centers can be immediately transferred to split‐vacancy centers with minimum modifications, such as Fabry–Perot microcavity design, lab‐on‐chip devices, and photonic integrated circuits …”

Section: Discussionmentioning

confidence: 99%

“…The immense interest in the NV − center stems from its outstanding spin properties: the spin‐tagged fluorescence enables optical addressing of ground‐state spin manifold even at room temperature, while the exceptionally long‐lived spin state (

T_{2} = 1.8 normalms

in 12 C‐enriched sample) allows for an efficient coupling with proximal electronic and nuclear spin in the lattice . Despite the milestone demonstration of spin–photon entanglement on NV − system, this emitter suffers from relatively poor optical properties, including low percentage of zero‐phonon‐line (ZPL) emission with a Debye–Waller factor of 0.03, strong spectral diffusion when located near surfaces, and a relatively long radiative lifetime of 13 ns . These deficiencies fuel the investigation for alternative emitters that combines bright, homogeneous, and coherent optical transitions with the long‐lived quantum memories.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Building Blocks for Quantum Network Based on Group‐IV Split‐Vacancy Centers in Diamond

2019

View full text Add to dashboard Cite

One ultimate goal of quantum information processing is to construct a quantum network for direct sharing of quantum information between distant parties based on stationary qubits for information storage and flying qubits for information transmission. This requires long‐lived quantum memories, efficient light–matter interface, and deterministic quantum gate operations. Among matter qubits, the electron spin of nitrogen vacancy center in diamond is an appealing option for its long coherence time at room temperature, deterministic microwave control, and optical preparation and readout of the qubit. However, its poor optical properties, including weak zero‐phonon‐line emission and large spectral diffusion, limit its potential for large‐scale deployment in quantum nodes. This has motivated the investigation for alternative quantum emitters that combine long‐time memory and coherent optical properties together. The emerging group‐IV split‐vacancy color centers in diamond, such as silicon‐vacancy, germanium‐vacancy, tin‐vacancy, and lead‐vacancy centers, are promising candidates of this ongoing exploration. These quantum emitters simultaneously possess microsecond spin coherence time and optically bright transitions with narrow linewidths. This review reports recent efforts on extending the spin coherence time of these color centers via temperature, strain, and charge control, which paves the road towards constructing solid‐based matter–photon interface for quantum network applications.

show abstract

Section: Discussionmentioning

confidence: 99%

T_{2} = 1.8 normalms

Section: Introductionmentioning

confidence: 99%

Building Blocks for Quantum Network Based on Group‐IV Split‐Vacancy Centers in Diamond

2019

View full text Add to dashboard Cite

show abstract

“…Similarly, the g does not have to succeed, because incomplete cluster states (with probability of missing entanglement edges below a percolation threshold) are still sufficient for universal quantum computing. NV-centers suffer from low out-coupling efficiencies, though this is conventionally combatted by coupling the center to a cavity [87], which has the added benefit of reducing emission out of the zero-phonon line by the Purcell effect.…”

Section: Experimental Realizationsmentioning

confidence: 99%

Generation of arbitrary all-photonic graph states from quantum emitters

2019

View full text Add to dashboard Cite

We present protocols to generate arbitrary photonic graph states from quantum emitters that are in principle deterministic. We focus primarily on two-dimensional cluster states of arbitrary size due to their importance for measurement-based quantum computing. Our protocols for these and many other types of two-dimensional graph states require a linear array of emitters in which each emitter can be controllably pumped, rotated about certain axes, and entangled with its nearest neighbors. We show that an error on one emitter produces a localized region of errors in the resulting graph state, where the size of the region is determined by the coordination number of the graph. We describe how these protocols can be implemented for different types of emitters, including trapped ions, quantum dots, and nitrogen-vacancy centers in diamond. is a 2×m cluster state, where m is the number of cycles. Schemes to create ladder-type cluster states using trapped ions have also been proposed [29]. However, for universal quantum computation, a larger twodimensional grid (n by m, with n, m?2) is needed; moreover, fault-tolerant universal computation requires a three-dimensional grid [30]. One interesting proposal to create a larger two-dimensional grid using feedback and atom-photon interactions in a cavity has been put forward [31]. However, this approach requires coupling the emitter to a chiral waveguide, which has yet to be demonstrated experimentally with high efficiency.In this paper, we propose an in-principle deterministic method to produce an arbitrary graph state that does not require photon-photon interactions. Instead, the entanglement is created between emitters and then transferred onto photons through optical pumping. This is similar to the idea presented in [28], although here, in addition to being able to create states corresponding to arbitrary graphs of any size, our scheme also allows for the entangling operations between emitters to occur after the photon pumping. Combined with heralding of the emission process, this allows one to perform the typically costly entangling operation only if there is a successful photon emission. Moreover, we show that, in a precise sense, our approach allows for the maximum possible delay in transferring the entanglement from the emitters onto the photons. Our protocol allows for arbitrary sized n by m clusters, given a linear array of n emitters, where each emitter can be entangled with its nearest neighbors. The operations required of the linear array are only a single two-emitter entangling gate and a photon pumping operation. For three-dimensional clusters, which permit fault-tolerant universal computation, our protocol requires a two-dimensional grid of nearest-neighbor connected emitters.This paper is organized as follows. First, a brief overview of the graph state formalism is provided. Second, our new framework to produce arbitrary graph states using emitters, assuming entangling gates are available between emitters, is presented. Then, we discuss concrete realizations ...

show abstract

“…In 2017, Riedel et al. reported the integration of diamond membranes, detached from the hosting substrate using a micromanipulator, with a chip‐based open‐access microcavity . The authors reported single‐photon emission ( Figure a) and claimed a Purcell factor of ≈30 for the ZPL translated from an overall Purcell factor of 2 (Figure b).…”

Section: Single‐photon Emitters and Nanoparticles In Open‐access Micrmentioning

confidence: 99%

Tunable Open‐Access Microcavities for Solid‐State Quantum Photonics and Polaritonics

Cai

et al. 2019

Adv Quantum Tech

View full text Add to dashboard Cite

Optical microcavities are powerful platforms widely applied in quantum information and integrated photonic circuits, among which the open‐access microcavity is a newly emerging cavity structure consisting of a micro‐sized concave mirror and a planar mirror controlled individually by groups of nanopositioners, whilst light emitters can be grown or transferred at the antinode of the cavity optical modes. Compared with monolithic microcavities, the open‐access microcavity enables the simultaneous realization of small mode volume, large‐range tunability, flexible structural engineering, and easiness for integration with external emitters, exhibiting extensive applications in the fields of solid‐state quantum photonics and polaritonics over the last decade. This review first introduces the basic theory and the construction methods of open‐access microcavities, followed by the recent advances of their applications in exciton‐polaritons, photon condensates, quantum light sources, and nanoparticle sensing.

show abstract

Deterministic Enhancement of Coherent Photon Generation from a Nitrogen-Vacancy Center in Ultrapure Diamond

Cited by 173 publications

References 52 publications

Building Blocks for Quantum Network Based on Group‐IV Split‐Vacancy Centers in Diamond

Building Blocks for Quantum Network Based on Group‐IV Split‐Vacancy Centers in Diamond

Generation of arbitrary all-photonic graph states from quantum emitters

Tunable Open‐Access Microcavities for Solid‐State Quantum Photonics and Polaritonics

Contact Info

Product

Resources

About