Indistinguishable Photons from Separated Silicon-Vacancy Centers in Diamond

Sipahigil, Alp; Jahnke, Kay D.; Rogers, Lachlan J.; Teraji, Tokuyuki; Isoya, Junichi; Zibrov, A. S.; Jelezko, Fedor; Lukin, Mikhail D.

doi:10.1103/physrevlett.113.113602

Cited by 405 publications

(413 citation statements)

References 40 publications

(57 reference statements)

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“…Finally, to utilize the broadband nature of diamond, we explored the potential of our angled-etching approach to realize optical cavities operating in visible and near-infrared. Visible diamond cavities are of great interest for the enhancement of emission properties of diamond's luminescent defects, such as the negatively charged silicon vacancy centre (zero phonon line at lB737-nm) [34][35][36] and, in particular, the negatively charged nitrogen vacancy centre (NV À , with zero phonon line at lB637-nm and phonon side band up to nearly 800-nm) [37][38][39] . To realize visible band optical cavities in diamond, we scaled down all design parameters by a factor of B2.5, and no additional modelling was needed.…”

Section: Resultsmentioning

confidence: 99%

High quality-factor optical nanocavities in bulk single-crystal diamond

et al. 2014

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Single-crystal diamond, with its unique optical, mechanical and thermal properties, has emerged as a promising material with applications in classical and quantum optics. However, the lack of heteroepitaxial growth and scalable fabrication techniques remains the major limiting factors preventing more wide-spread development and application of diamond photonics. In this work, we overcome this difficulty by adapting angled-etching techniques, previously developed for realization of diamond nanomechanical resonators, to fabricate racetrack resonators and photonic crystal cavities in bulk single-crystal diamond. Our devices feature large optical quality factors, in excess of 10 5 , and operate over a wide wavelength range, spanning visible and telecom. These newly developed high-Q diamond optical nanocavities open the door for a wealth of applications, ranging from nonlinear optics and chemical sensing, to quantum information processing and cavity optomechanics.

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Section: Resultsmentioning

confidence: 99%

High quality-factor optical nanocavities in bulk single-crystal diamond

et al. 2014

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“…One is to use "single-emitter" quantum systems [10,11] such as semiconductor quantum dots or color centers in diamond. These systems emit single photons nearly on-demand, and there is a trend to integrate these systems on photonic chips [12,13]; however, producing highly indistinguishable photons from distinct emitters remains challenging because of the difficulty in fabricating identical emitters at the nanoscale [14,15]. The other approach is to generate correlated photon pairs via spontaneous nonlinear optical processes, such as spontaneous parametric down conversion (SPDC) or spontaneous four-wave mixing (SFWM) in suitable crystals or waveguides, where the detection of one photon in a pair "heralds" the existence of its partner.…”

Section: Two Major Strategies For Single-photon Sourcesmentioning

confidence: 99%

CMOS-compatible photonic devices for single-photon generation

2016

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Sources of single photons are one of the key building blocks for quantum photonic technologies such as quantum secure communication and powerful quantum computing. To bring the proof-of-principle demonstration of these technologies from the laboratory to the real world, complementary metal-oxide-semiconductor (CMOS)-compatible photonic chips are highly desirable for photon generation, manipulation, processing and even detection because of their compactness, scalability, robustness, and the potential for integration with electronics. In this paper, we review the development of photonic devices made from materials (e.g., silicon) and processes that are compatible with CMOS fabrication facilities for the generation of single photons.

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“…[7][8][9] Many of these applications rely on optical qubits that exhibit two-photon quantum interference on a beamsplitter, the primary mechanism for achieving effective photon-photon interactions. A number of works have reported such two-photon interference from a variety of solid-state quantum emitters such as defect centers, 10,11 dophants, 12 and quantum dots. [13][14][15][16][17][18][19][20][21][22] But these sources exhibit isotropic emission that is often difficult to collect efficiently.…”

mentioning

confidence: 99%

“…[37][38][39] For general Hong-Ou-Mandel experiments with two detectors at the opposite sides of the beamsplitter, destructive interference creates anti-bunching in the coincidence curves. 10,20 However, in this modified scheme, we collect the two-photon state from one arm of the path-entangled state | |2,0 |0,2 /√2, and split it using a second 50:50 beamsplitter. The two-photon state results in bunching at zero delay time as opposed to anti-bunching.…”

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confidence: 99%

Two-Photon Interference from the Far-Field Emission of Chip-Integrated Cavity-Coupled Emitters

et al. 2016

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ABSTRACT. Interactions between solid-state quantum emitters and cavities are important for a broad range of applications in quantum communication, linear optical quantum computing, nonlinear photonics, and photonic quantum simulation. These applications often require combining many devices on a single chip with identical emission wavelengths in order to generate two-photon interference, the primary mechanism for achieving effective photon-photon interactions. Such integration remains extremely challenging due to inhomogeneous broadening and fabrication errors that randomize the resonant frequencies of both the emitters and cavities. In this letter we demonstrate two-photon interference from independent cavity-coupled emitters on the same chip, providing a potential solution to this long-standing problem. We overcome spectral mismatch between different cavities due to fabrication errors by depositing and locally evaporating a thin layer of condensed nitrogen. We integrate optical heaters to tune individual dots within each cavity to the same resonance with better than 3 µeV of precision. Combining these tuning methods, we demonstrate two-photon interference between two devices spaced by less than 15 µm on the same chip with a post-selected visibility of 33%. These results pave the way to integrate multiple quantum light sources on the same chip to develop quantum photonic devices.

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Indistinguishable Photons from Separated Silicon-Vacancy Centers in Diamond

Cited by 405 publications

References 40 publications

High quality-factor optical nanocavities in bulk single-crystal diamond

High quality-factor optical nanocavities in bulk single-crystal diamond

CMOS-compatible photonic devices for single-photon generation

Two-Photon Interference from the Far-Field Emission of Chip-Integrated Cavity-Coupled Emitters

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