Multiphoton Effects Enhanced due to Ultrafast Photon-Number Fluctuations

Spasibko, Kirill Yu.; Копылов, Д. А.; Krutyanskiy, V. L.; Murzina, T. V.; Leuchs, Gerd; Chekhova, Maria V.

doi:10.1103/physrevlett.119.223603

Cited by 74 publications

(46 citation statements)

References 52 publications

(71 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Together with the detected photon rates of 3.4×10 5 counts s -1 , these results promise enhancement of a large number of applications in classical and quantum optics [8][9][10][11][12][13][14][15][16]. The presented source possesses several important advantages compared to conventional thermal light sources based on amplified spontaneous emission [12,[29][30][31] or parametric down conversion [10,26,28].…”

Section: Discussionmentioning

confidence: 67%

“…At the same time, its spectral properties allow for a direct utilization in interactions with target atomic ensembles, in which prospective tunable nonlinearities and efficient and large bandwidth light storage have been demonstrated [27,[45][46][47][48][49]. We foresee employment of the developed source for studies of optical nonlinearities in quantum regime and of effects of photon statistics on the efficiency of the nonlinear processes [13,45]. We aim for the utilization of the presented thermal light for investigation of noise properties of single-photon level optical memories based on warm atomic ensembles [46].…”

Section: Discussionmentioning

confidence: 98%

“…As such, this statistics naturally appears at thermal equilibrium. Ideal thermal radiation can be directly applied in diagnostics of quantum states and processes [8][9][10], enhancement of nonlinear effects and metrology [11][12][13], quantum imaging [14][15][16], generation of nonclassicality [17], or pioneering tests of quantum thermodynamics [18] and quantum key distribution [19].…”

Section: Introductionmentioning

confidence: 99%

“…Although such approach can emulate thermal light field with very high fidelity, it is technically limited in the achievable spectral bandwidths due to practically achievable disk rotation speeds, average grain spatial size and focal spot of the scattered laser beam to a few MHz range [23]. However, it is the actual spectral bandwidth which represents a crucial parameter for potential improvement of waste majority of applications of thermal light [8][9][10][11][12][13][14][15][16]. On one side it directly relates to the efficiency of various processes and on the other, it allows for increasing their repetition rates.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Generation of ideal thermal light in warm atomic vapor

et al. 2018

View full text Add to dashboard Cite

We present the experimental generation of light with directly observable close-to-ideal thermal statistical properties. The thermal light state is prepared using a spontaneous Raman emission in a warm atomic vapor. The photon number statistics are evaluated by both the measurement of secondorder correlation function and by the detailed analysis of the corresponding photon number distribution, which certifies the quality of the Bose-Einstein statistics generated by a natural physical mechanism. We further demonstrate the extension of the spectral bandwidth of the generated light to hundreds of MHz domain while keeping the ideal thermal statistics, which suggests a direct applicability of the presented source in a broad range of applications including optical metrology, tests of robustness of quantum communication protocols, or quantum thermodynamics.

show abstract

Section: Discussionmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Generation of ideal thermal light in warm atomic vapor

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The BSV beam is focused into a 1 mm LiNbO 3 crystal doped with 5.1% of Mg [27,28] by means of an aspherical lens with the 8 mm focal length. Our focusing results in the beam waist m » w 2 6 m 0 and the confocal parameter b≈40 μm.…”

Section: Methodsmentioning

confidence: 99%

Study of broadband multimode light via non-phase-matched sum frequency generation

et al. 2019

View full text Add to dashboard Cite

We propose non-phase-matched sum frequency generation (SFG) as a method for characterizing broadband multimode light. Both the central wavelength and the bandwidth are in this case not limited by the phase matching condition. As an example, we consider bright squeezed vacuum (BSV) generated through high-gain parametric down conversion (PDC). In the spectrum of SFG from BSV, we observe the coherent peak and the incoherent background. We show that the ratio of their widths is equal to the number of frequency modes in BSV, which in the case of low-gain PDC gives the degree of frequency entanglement for photon pairs. By generating the sum frequency in the near-surface region of a nonlinear crystal, we increase the SFG efficiency and get rid of the modulation caused by chromatic dispersion, known as Maker fringes. This allows one to use non-phasematched SFG as a wavelength-independent autocorrelator. Furthermore, we demonstrate efficient non-phase-matched three-and four-frequency summation of broadband multimode light, hardly possible under phase matching. We show that the latter contains the coherent peak while the former does not.

show abstract

Modelocked Thermal Frequency Combs for Ultrashort Chaotic Quantum Optics

Wakui,

Tsujimoto,

Kishimoto

et al. 2024

Adv Quantum Tech

View full text Add to dashboard Cite

Modelocked thermal frequency combs (MTCs) are generated by employing spectrally narrowed amplified spontaneous emission (ASE) seeded into an electro‐optic frequency comb generator. The MTC emits 2‐ps duration ultrashort pulses at a repetition rate of 10 GHz. Autocorrelation of the MTC pulses confirms a reduced coherence time, ps, aligning with the narrowed bandwidth of the ASE seed. Intensity correlations of optically gated MTC pulses at a repetition rate of 250 MHz reveal nearly ideal thermal photon statistics with an experimental , yielding an intrinsic after background noise removal. As a practical application, second harmonic generation (SHG) is performed utilizing the optically gated MTC pulses as a pump and experimental intensity correlations, , are examined for the SH photons. An entire transition in , continuously changing from six to two by increasing the pump strength, agrees with the single‐mode analytical model. Furthermore, time‐resolved pulse height correlations allow to simultaneously acquire power variations in SHG and third harmonic generation against the pump. With the maximum peak intensity, , realized in a periodically poled waveguide for SHG, the demonstration highlights the potential for various applications in chaotic quantum optics experiments that necessitate ultrashort, high‐intensity, single‐spatiotemporal‐mode thermal pulses.

show abstract

Multiphoton Effects Enhanced due to Ultrafast Photon-Number Fluctuations

Cited by 74 publications

References 52 publications

Generation of ideal thermal light in warm atomic vapor

Generation of ideal thermal light in warm atomic vapor

Study of broadband multimode light via non-phase-matched sum frequency generation

Modelocked Thermal Frequency Combs for Ultrashort Chaotic Quantum Optics

Contact Info

Product

Resources

About