Control and Measurement of Quantum Light Pulses for Quantum Information Science and Technology

Abstract

Manipulation of quantum optical pulses, such as single photons or entangled photon pairs, enables numerous applications, from quantum communications and networking to enhanced sensing. Common methods to shape laser pulses based upon filtering or amplification cannot be employed with quantum light pulses as these approaches introduce detrimental loss and noise to the system. Here, methods to control and measure quantum light pulses based upon deterministic application of targeted phases in time and frequency domains are reviewed, along with recent demonstrations of quantum applications.

Spectral single photons characterization using generalized Hong, Ou and Mandel interferometry

“…In addition, the improvement of experimental platforms such as split-ring resonators [17,[48][49][50][51], atoms coupled to two waveguides [52], three-photon absorption effect (an example of such effect in semiconductor material is presented in [53]), are promising candidates towards the realization of such non-linear interactions. What's more, the recent development of EOMs [54,55] useful to produce the frequency shift necessary for the characterization of single photon states, motivates the use of the generalized HOM interferometer. Besides, the chronocyclic pseudo-Wigner distribution has been used in a variety of applications involving classical fields, such as error diagnosis, and could be employed in our context to detect faulty optical components such as EOM and pulse shaper, which are essential for quantum computation with time and frequency degree of freedom as illustrated in [51,56,57].…”

Mode-selective single-photon addition to a multimode quantum field

“…0 npns n i c 3 , where W p is the energy contained in a single pulse of the field, n j (resp. ω 0 j ) is the refractive index seen by the fields (resp.…”

“…Spectro-temporal mode of light are a versatile resource for quantum information and quantum communication protocols [1][2][3]. In particular ultra-fast light, that can be easily manipulated via femtosecond shaping techniques, has been used for application in both discrete variables and continuous variable (CV) encoding [4][5][6][7][8] In order to exploit the large Hilbert space offered by the frequency mode of femtosecond light sources, the tailoring of the spectral mode structure for quantum state generation and manipulation should be performed [2,5,[9][10][11][12][13][14][15][16].…”

A modal approach to quantum temporal imaging

“…In order to cope with the great heterogeneity of technologies that are used in a quantum network, it is important to optimize modematching between nodes. To this purpose a plethora of strategies have been proposed such as quantum translation of the carrier frequency [3][4][5][6], waveform conversion [7], bandwidth compression or stretching [8][9][10][11][12], quantum pulse gating [13,14] and shaping [15,16].…”