Time-Resolved Hanbury Brown–Twiss Interferometry of On-Chip Biphoton Frequency Combs Using Vernier Phase Modulation

Myilswamy, Karthik V.; Seshadri, Suparna; Lu, Hsuan-Hao; Alshaykh, Mohammed S.; Liu, Junqiu; Kippenberg, Tobias J.; Weiner, Andrew M.; Lukens, Joseph M.

doi:10.1103/physrevapplied.19.034019

Cited by 4 publications

(2 citation statements)

References 72 publications

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“…To overcome this limitation, we employ Vernier phase modulation-externally phase modulating with an RF frequency slightly detuned from the FSR-to directly measure the fine features in g (2) (τ ). 37 This approach enhances our ability to explore the temporal features of BFC correlation functions, providing a more profound understanding of the quantum properties of the BFCs.…”

Section: Time-resolved Measurements Of Integrated Bfcsmentioning

confidence: 99%

“…It is noteworthy that g (2) (0) = 2 is obtained in case of time-resolved measurements, consistent with thermal statistics for unheralded signal bins. Our Vernier phase modulation technique, detailed in our longer work, 37 is equally applicable for pulsed pumping of microring and cross-correlation measurements. This scheme acts as a bridge between the relatively high-jitter approach of direct single-photon detection and nonlinear optical approaches that offer femtosecond-scale resolution albeit with lower efficiency and higher experimental complexity.…”

Section: Time-resolved Measurements Of Integrated Bfcsmentioning

confidence: 99%

See 1 more Smart Citation

Toward quantum networking with frequency-bin qudits

Myilswamy,

Seshadri,

et al. 2024

Quantum Computing, Communication, and Simulation IV

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Quantum networking holds tremendous promise in transforming computation and communication. Entangledphoton sources are critical for quantum repeaters and networking, while photonic integrated circuits are vital for miniaturization and scalability. In this talk, we focus on generating and manipulating frequency-bin entangled states within integrated platforms. We encode quantum information as a coherent superposition of multiple optical frequencies; this approach is favorable due to its amenability to high-dimensional entanglement and compatibility with fiber transmission. We successfully generate and measure the density matrix of biphoton frequency combs from integrated silicon nitride microrings, fully reconstructing the state in an 8 × 8 two-qudit Hilbert space, the highest so far for frequency bins. Moreover, we employ Vernier electro-optic phase modulation methods to perform time-resolved measurements of biphoton correlation functions. Currently, we are exploring bidirectional pumping of microrings to generate indistinguishable entangled pairs in both directions, aiming to demonstrate key networking operations such as entanglement swapping and Greenberger-Horne-Zeilinger state generation in the frequency domain.

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Section: Time-resolved Measurements Of Integrated Bfcsmentioning

confidence: 99%

Section: Time-resolved Measurements Of Integrated Bfcsmentioning

confidence: 99%

Toward quantum networking with frequency-bin qudits

Myilswamy,

Seshadri,

et al. 2024

Quantum Computing, Communication, and Simulation IV

Self Cite

View full text Add to dashboard Cite

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On-chip parallel processing of quantum frequency comb

et al. 2023

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The frequency degree of freedom of optical photons has been recently explored for efficient quantum information processing. Significant reduction in hardware resources and enhancement of quantum functions can be expected by leveraging the large number of frequency modes. Here, we develope an integrated photonic platform for the generation and parallel processing of quantum frequency combs (QFCs). Cavity-enhanced parametric down-conversion with Sagnac configuration is implemented to generate QFCs with identical spectral distributions. On-chip quantum interference of different frequency modes is simultaneously realized with the same photonic circuit. High interference visibility is maintained across all frequency modes with the identical circuit setting. This enables the on-chip reconfiguration of QFCs. By deterministically separating QFCs without spectral filtering, we further demonstrate high-dimensional Hong-Ou-Mandel effect. Our work provides the critical step for the efficient implementation of quantum information processing with integrated photonics using the frequency degree of freedom.

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