Generalized approach to quantum interference in lossy N-port devices via a singular value decomposition

Hernández, Osmery; Liberal, Iñigo

doi:10.1364/oe.456495

Cited by 6 publications

(2 citation statements)

References 67 publications

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“…Similarly, all CPA quantum state transformations discussed in ref operate in a power combining configuration. Thus, our analysis concludes that such a WPD configuration empowers a variety of absorption-based quantum state transformations − while protecting them from the detrimental impact that the thermal noise produced in lossy devices could have in few-photon light states.…”

Section: Resultsmentioning

confidence: 82%

Noise Cancellation Effects in Integrated Photonics with Wilkinson Power Dividers

Ortega‐Gomez¹,

Hernández²,

Oña³

et al. 2023

ACS Photonics

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Wilkinson power dividers (WPDs) are a popular element in RF and microwave technologies known for providing isolation capabilities. However, the benefits that WPDs could offer to integrated photonic systems are far less studied. Here, we investigate the thermal emission from and the noise performance of silicon-on-insulator (SOI) WPDs. We find that WPDs exhibit a noiseless port, with important implications for receiving systems and absorption-based quantum state transformations. At the same time, the thermal signals exiting noisy ports exhibit nontrivial correlations, opening the possibility for noise cancellation. We analyze passive and active networks containing WPDs showing how such nontrivial correlations can prevent the amplification of the thermal noise introduced by WPDs while benefiting from their isolation capabilities. Using this insight, we propose a modified ring-resonator amplifier that improves by N times the SNR in comparison with conventional traveling wave and ring-resonator amplifiers, with N being the number of inputs/outputs of the WPD. We believe that our results represent an important step forward in the implementation of SOI-WPDs and their integration in complex photonic networks, particularly for mid-IR and quantum photonics applications.

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Section: Resultsmentioning

confidence: 82%

Noise Cancellation Effects in Integrated Photonics with Wilkinson Power Dividers

Ortega‐Gomez¹,

Hernández²,

Oña³

et al. 2023

ACS Photonics

Self Cite

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“…Bosonic and fermionic anti-HOM interference, along with other non-unitary phenomena like entanglement generation by dissipation [38,39] and CPA [40][41][42] of quantum light [43][44][45][46][47][48][49][50][51][52], emphasizes the fundamental and practical importance of coherence preserving dissipation in quantum optics.…”

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confidence: 99%

Anti-Hong–Ou–Mandel interference by coherent perfect absorption of entangled photons

Vetlugin

Guo²,

Soci³

et al. 2022

New J. Phys.

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Two-photon interference, known as the Hong-Ou-Mandel effect, has colossal implications for quantum technology. It was observed in 1987 with two photodetectors monitoring outputs of the beamsplitter illuminated by photon pairs: the coincidence rate of the detectors drops to zero when detected photons overlap in time. More broadly, bosons (e.g., photons) coalesce while fermions (e.g., electrons) anti-coalesce when interfering on a lossless beamsplitter. Quantum interference of bosons and fermions can be tested in a single – photonics platform, where bosonic and fermionic states are artificially created as pairs of entangled photons with symmetric and anti-symmetric spatial wavefunctions. We observed that interference on a lossy beamsplitter, or a subwavelength coherent absorber reverses quantum interference in such a way that bosonic states anti-coalesce while fermionic states exhibit coalescent-like behavior. The ability to generate states of light with different statistics and manipulate their interference offers important opportunities for quantum information and metrology.

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Modeling quantum light interference on a quantum computer

Vetlugin

Soci

Zheludev

2022

Applied Physics Letters

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Modeling of photonic devices traditionally involves solving the equations of light–matter interaction and light propagation. Here, we demonstrate an alternative modeling methodology by reproducing the optical device functionality using a quantum computer. As an illustration, we simulate the quantum interference of light on a thin absorbing film. Such interference can lead to either perfect absorption or total transmission of light through the film, the phenomena attracting attention for data processing applications in classical and quantum information networks. We map the behavior of the photon in the interference experiment to the evolution of a quantum state of transmon, a superconducting charge qubit of the IBM quantum computer. Details of the real optical experiment are flawlessly reproduced on the quantum computer. We argue that the superiority of this methodology shall be apparent in modeling complex multi-photon optical phenomena and devices.

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Generalized approach to quantum interference in lossy N-port devices via a singular value decomposition

Cited by 6 publications

References 67 publications

Noise Cancellation Effects in Integrated Photonics with Wilkinson Power Dividers

Noise Cancellation Effects in Integrated Photonics with Wilkinson Power Dividers

Anti-Hong–Ou–Mandel interference by coherent perfect absorption of entangled photons

Modeling quantum light interference on a quantum computer

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