Generation of time-bin-entangled photons without temporal postselection

Rossi, Alessandro; Vallone, Giuseppe; Martini, F. De; Mataloni, Paolo

doi:10.1103/physreva.78.012345

Cited by 20 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to confirm that imperfections of our experimental results are mainly from our phase locking system on the UMIs, we realize the same experiment using a single UMI [47,48] rather than two UMIs as shown in Fig. 8.…”

Section: Experimental Setup With a Single Umi Instead Of Twomentioning

confidence: 95%

Experimental implementation of arbitrary entangled operations

Hong,

Park,

Choi

et al. 2020

Preprint

View full text Add to dashboard Cite

Quantum entanglement lies at the heart of quantum mechanics in both fundamental and practical aspects. The entanglement of quantum states has been studied widely, however, the entanglement of operators has not been studied much in spite of its importance. Here, we propose a scheme to realize arbitrary entangled operations based on a coherent superposition of local operations. Then, we experimentally implement several intriguing two-qubit entangled operations in photonic systems. We also discuss the generalization of our scheme to extend the number of superposed operations and the number of qubits. Due to the simplicity of our scheme, we believe that it can reduce the complexity or required resources of the quantum circuits and provide insights to investigate properties of entangled operations.

show abstract

Section: Experimental Setup With a Single Umi Instead Of Twomentioning

confidence: 95%

Experimental implementation of arbitrary entangled operations

Hong,

Park,

Choi

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…However, the temporal purity of the single photons generated by PDC is poor, which is important in quantum information processing. On the other hand, the timebin states [26][27][28][29], which encoding information directly in time domain, is verified through single-photon interference, have potentially important application in QC and QKD [30][31][32]. The generation of multi-bins with genuine single photons is complicated in set up and of low production efficiency, and therefore the single photons are produced from attenuated laser pulses.…”

Section: Introductionmentioning

confidence: 99%

Interference of temporally shaped single photons

Chen¹,

Yang²,

Ren³

et al. 2019

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

We observe the single-photon interference by a single-photon source generated from a spontaneous four-wave mixing process in a cold 85Rb atomic ensemble. By adjusting the coupling and pump power, we obtain two distinguished temporal modes for single photons. Through an unbalance Mach–Zehnder interferometer, these temporally shaped single photons interfere with themselves and produce constructive or destructive interference according to the phase in the single-photon wave packet. The interferometric results of these temporally shaped single photons match well with the theoretical simulation.

show abstract

“…The interferometric preparation of time-bin qubits of broadband photons generated in non-linear crystals from a spontaneous parametric down conversion (SPDC) has been reported in Refs. [6,7,8,9]. The conversion of weak signal pulses into multi-temporal modes in room-temperature vapors has been shown under electromagnetic induced transparency conditions [10] and far-off resonant Raman schemes [11].…”

Section: Introductionmentioning

confidence: 99%

Heralded generation of single photons entangled in multiple temporal modes with controllable waveforms

Gogyan¹,

Sisakyan²,

Ахмеджанов³

et al. 2014

Laser Phys.

View full text Add to dashboard Cite

Time-bin entangled single-photons are highly demanded for long distance quantum communication. We propose a heralded source of tunable narrowband single photons entangled in well-separated multiple temporal modes (time bins) with controllable amplitudes. The detection of a single Stokes photon generated in a cold atomic ensemble via Raman scattering of a weak write pulse heralds the preparation of one spin excitation stored within the atomic medium. A train of read laser pulses deterministically converts the atomic excitation into a single anti-Stokes photon delocalized in multi-time-bins. The waveforms of bins are well controlled by the read pulse parameters. A scheme to measure the phase coherence across all time bins is suggested.

show abstract

Generation of time-bin-entangled photons without temporal postselection

Cited by 20 publications

References 19 publications

Experimental implementation of arbitrary entangled operations

Experimental implementation of arbitrary entangled operations

Interference of temporally shaped single photons

Heralded generation of single photons entangled in multiple temporal modes with controllable waveforms

Contact Info

Product

Resources

About