Two-photon spectroscopy of excitons with entangled photons

Schlawin, Frank; Mukamel, Shaul

doi:10.1063/1.4848739

Cited by 30 publications

(31 citation statements)

References 39 publications

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“…13 In that case, these resonances can be recovered by using quantum or entangled light. 10,11,[14][15][16] The support of the National Science Foundation (Grant No. CHE-1361516) and the Chemical Sciences, Geosciences, and Biosciences division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy through Award No.…”

Section: (N)mentioning

confidence: 99%

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Communication: The origin of many-particle signals in nonlinear optical spectroscopy of non-interacting particles

Mukamel

2016

The Journal of Chemical Physics

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Nonlinear spectroscopy signals detected by fluorescence from dilute samples of N non-interacting molecules are usually adequately described by simply multiplying the single molecule response by N. We show that signals that scale with higher powers of N are generated by the joint detection of several particles. This can be accomplished by phase sensitive detection such as phase cycling, photo-acoustic modulation, or by Hanbury-Brown Twiss photon coincidence. Such measurements can dissect the ensemble according to the number of excited particles.

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Section: (N)mentioning

confidence: 99%

“…These eventually cancel out once the signal is calculated and assumes the factorized form of Eq. (14).…”

Section: (N)mentioning

confidence: 99%

Communication: The origin of many-particle signals in nonlinear optical spectroscopy of non-interacting particles

Mukamel

2016

The Journal of Chemical Physics

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“…The tunable spectral entanglement we present may also have useful capabilities for two-photon spectroscopy [33] and lightinduced matter correlations [34,35]. In these applications, the time-ordering of when each photon reaches the sample can affect the two-photon absorption probability.…”

Section: A Tunable Spectral Entanglementmentioning

confidence: 95%

Dispersion-enabled quantum state control in integrated photonics

Marchildon¹,

Helmy²

2016

Optica

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Integrated optics has brought unprecedented levels of stability and performance to quantum photonic circuits. However, integrated devices are not merely micron-scale equivalents of their bulk-optics counterparts. By exploiting the inherently dispersive characteristics of the integrated setting, such devices can play a remarkably more versatile role in quantum circuit architectures. We show this by examining the implications of linear dispersion in an ordinary directional coupler. Dispersion unlocks several novel capabilities for this device, including in-situ control over photon spectral and polarization entanglement, tunable photon time-ordering, and entanglement-sensitive two-photon coincidence generation. Also revealed is an ability to maintain perfect two-photon anti-coalescence while tuning the interference visibility, which has no equivalent in bulk-optics. The outcome of this work adds to a suite of state engineering and characterization tools that benefit from the advantages of integration. It also paves the way for re-evaluating the possibilities offered by dispersion in other on-chip devices.

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“…Such devices typically use modal mismatch to restrict coupling to a narrow band of wavelengths near a single phase-matched point. This may suffice for a fixed non-degeneracy, yet high tunability in the photon wavelength separation serves an essential function for certain applications, such as emerging quantum photonic spectroscopy techniques [35,36]. In such cases the versatility of the interference-facilitated approach provides a clear advantage, especially if the tuning range must include degeneracy.…”

Section: Discussionmentioning

confidence: 99%

Deterministic separation of arbitrary photon pair states in integrated quantum circuits

Marchildon

Helmy

2016

Laser & Photonics Reviews

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Entangled photon pairs generated within integrated devices must often be spatially separated for their subsequent manipulation in quantum circuits. Separation that is both deterministic and universal can in principle be achieved through anticoalescent two-photon quantum interference. However, such interference-facilitated pair separation (IFPS) has not been extensively studied in the integrated setting, where the strong polarization and wavelength dependencies of integrated couplers -as opposed to bulk-optics beamsplitters -can have important implications for performance beyond the identical-photon regime. This paper provides a detailed review of IFPS and examines how these dependencies impact separation fidelity and interference visibility. Focus is given to IFPS mediated by an integrated directional coupler. The analysis applies equally to both on-chip and in-fiber implementations, and can be expanded to other coupler architectures such as multimode interferometers. When coupler dispersion is present, the separation performance can depend on photon bandwidth, spectral entanglement, and the linearity of the dispersion. Under appropriate conditions, reduction in the separation fidelity due to loss of non-classical interference can be perfectly compensated for by classical wavelength demultiplexing effects. This work informs the design as well as the performance assessment of circuits for achieving universal photon pair separation for states with tunable arbitrary properties.

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Two-photon spectroscopy of excitons with entangled photons

Cited by 30 publications

References 39 publications

Communication: The origin of many-particle signals in nonlinear optical spectroscopy of non-interacting particles

Communication: The origin of many-particle signals in nonlinear optical spectroscopy of non-interacting particles

Dispersion-enabled quantum state control in integrated photonics

Deterministic separation of arbitrary photon pair states in integrated quantum circuits

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