On-Chip Quantum Interference from a Single Silicon Ring-Resonator Source

Preble, Stefan F.; Fanto, Michael L.; Steidle, Jeffrey A.; Tison, Christopher C.; Howland, Gregory A.; Wang, Zihao; Alsing, Paul M.

doi:10.1103/physrevapplied.4.021001

Cited by 73 publications

(48 citation statements)

References 27 publications

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“…Multi‐mode optical microcavities have enabled the emergence of compact optical sources such as parametric oscillators and nonlinear combs for quantum information and metrology . Efficient nonlinear interactions take place, owing to a combination of large Q factor, small modal volume and large material index …”

Section: Introductionmentioning

confidence: 99%

Comb of high‐Q Resonances in a Compact Photonic Cavity

Combrié

Lehoucq

Moille

et al. 2017

Laser & Photonics Reviews

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The optical equivalent of the quantum mechanical oscillator is demonstrated in a photonic crystal cavity, owing to the balance of the background dispersion and a bichromatic potential. Consequently, several equi‐spaced resonances with large loaded Q factors are obtained within a very tiny volume. A detailed statistical analysis is carried out by exploiting the complex reflection spectra measured with Optical Coherent Tomography. The log‐normal distribution of the intrinsic Q‐factors is centered at 0.7 million. The device is made of Ga0.5In0.5P in order to suppress the two photon absorption in the Telecom spectral range considered here. This is crucial to turn the strong localization of light into ultra‐efficient parametric interactions.

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Section: Introductionmentioning

confidence: 99%

Comb of high‐Q Resonances in a Compact Photonic Cavity

Combrié

Lehoucq

Moille

et al. 2017

Laser & Photonics Reviews

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“…[38], and Ge (0.86 × 10 −20 m 2 =V 2 , at λ ¼ 3.17 um) [39] do not meet this requirement, but could nevertheless produce a strong nonlinearity at extremely low powers (corresponding to a few hundreds of photons in the cavity). These parametric few-photon nonlinearities could have numerous applications in frequency conversion [40], alloptical memory, logic, and routing [41][42][43], neuromorphic optical computing [44,45], and entangled photon pair production by spontaneous four-wave mixing [46][47][48].…”

Section: Prl 118 223605 (2017) P H Y S I C a L R E V I E W L E T T Ementioning

confidence: 99%

Self-Similar Nanocavity Design with Ultrasmall Mode Volume for Single-Photon Nonlinearities

2017

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We propose a photonic crystal nanocavity design with self-similar electromagnetic boundary conditions, achieving ultrasmall mode volume (V eff ). The electric energy density of a cavity mode can be maximized in the air or dielectric region, depending on the choice of boundary conditions. We illustrate the design concept with a silicon-air one-dimensional photon crystal cavity that reaches an ultrasmall mode volume of V eff ∼ 7.01 × 10 −5 λ 3 at λ ∼ 1550 nm. We show that the extreme light concentration in our design can enable ultrastrong Kerr nonlinearities, even at the single-photon level. These features open new directions in cavity quantum electrodynamics, spectroscopy, and quantum nonlinear optics. DOI: 10.1103/PhysRevLett.118.223605 Optical nanocavities with small mode volume (V eff ) and high quality factor (Q) can greatly increase light-matter interaction [1] and have a wide range of applications including nanocavity lasers [2-4], cavity quantum electrodynamics [5,6], single-molecule spectroscopy [7], and nonlinear optics [8][9][10]. Planar photonic crystal cavities can enable high Q factors, exceeding 10 6 [11], together with mode volumes that are typically on the order of a qubic wavelength. However, it was shown that by introducing an air slot into a photonic crystal (PhC) cavity, it is possible to achieve the electromagnetic (EM) mode with small V eff on the order of 0.01λ 3 [12], where λ is the freespace wavelength. This field concentration results from the boundary condition on the normal component of the electric displacement ( ⃗ D). Here, we propose a method to further reduce V eff by making use of the second EM boundary condition, the conservation of the parallel component of the electric field. Furthermore, these field concentration methods can be concatenated to reduce V eff even further, limited only by practical considerations such as fabrication resolution. The extreme field concentration of our cavity design opens new possibilities in nonlinear optics. In particular, we show that Kerr nonlinearities, which are normally weak, would be substantially enhanced so that even a single photon may shift the cavity resonance by a full linewidth, under realistic assumptions of materials and fabrication tolerances.The mode volume of a dielectric cavity [described by the spatially varying permittivity ϵð ⃗rÞ] is given by the ratio of the total electric energy to the maximum electric energy density [13],In typical PhC cavity designs, the minimum cavity mode volume is given by a half-wavelength bounding box, or3 [14], agreeing with the diffraction limit. However, as is clear from Eq. (1), the mode volume is determined by the electric energy density at the position where it is maximized. Thus, it is not strictly restricted by the diffraction limit. A strong local inhomogeneity in ϵð ⃗rÞ can greatly increase this electric energy density and correspondingly shrink the mode volume. Figure 1(a) plots the fundamental mode of a silicon-air one-dimensional PhC cavity produced by three-dimensional FDTD simulati...

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“…Further, we are investigating larger networks of directionally coupled silicon nanophonotonic waveguide/mrr arrays for possible quantum advantages with respect to communications, sensing and metrology [25,26].…”

Section: Summary and Discussionmentioning

confidence: 99%

Photon-pair generation in a lossy microring resonator. II. Entanglement in the output mixed Gaussian squeezed state

Alsing

Hach

2017

Phys. Rev. A

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In this work we examine the entanglement of the output signal-idler squeezed vacuum state in the Heisenberg picture as a function of the coupling and internal propagation loss parameters of a microring resonator.Using the log-negativity as a measure of entanglement for a mixed Gaussian state, we examine the competitive effects of the transfer matrix that encodes the classical phenomenological loss, as well as the matrix that that incorporates the coupling and internal propagation loss due to the quantum Langevin noise fields required to preserve unitarity of the composite system, (signal-idler) and environment (noise) structure.

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On-Chip Quantum Interference from a Single Silicon Ring-Resonator Source

Cited by 73 publications

References 27 publications

Comb of high‐Q Resonances in a Compact Photonic Cavity

Comb of high‐Q Resonances in a Compact Photonic Cavity

Self-Similar Nanocavity Design with Ultrasmall Mode Volume for Single-Photon Nonlinearities

Photon-pair generation in a lossy microring resonator. II. Entanglement in the output mixed Gaussian squeezed state

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