<i>Čerenkov Radiation and Its Applications</i>

Jelley, J. V.; Brown, Sanborn C.

doi:10.1063/1.3060850

Cited by 255 publications

(195 citation statements)

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“…Intriguingly, we find the most striking features when the particle is injected supersonically. The physics of fast particles is responsible for a rich variety of phenomena, such as flutter in aerodynamics, Cerenkov radiation [13], and bremsstrahlung [14]. Our results provide an example of new physics induced by supersonic motion in a non-relativistic quantum system.…”

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confidence: 94%

Quantum flutter of supersonic particles in one-dimensional quantum liquids

2012

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The non-equilibrium dynamics of strongly correlated many-body systems exhibits some of the most puzzling phenomena and challenging problems in condensed matter physics. Here we report on essentially exact results on the time evolution of an impurity injected at a finite velocity into a one-dimensional quantum liquid. We provide the first quantitative study of the formation of the correlation hole around a particle in a strongly coupled many-body quantum system, and find that the resulting correlated state does not come to a complete stop but reaches a steady state which propagates at a finite velocity. We also uncover a novel physical phenomenon when the impurity is injected at supersonic velocities: the correlation hole undergoes long-lived coherent oscillations around the impurity, an effect we call quantum flutter. We provide a detailed understanding and an intuitive physical picture of these intriguing discoveries, and propose an experimental setup where this physics can be realized and probed directly.Quantum environments are known to be capable of drastically altering the properties of embedded particles, notable examples being the formation of polarons in solid-state systems [1], Kondo singlets in systems with localized impurities [2], and quasiparticles in Fermi liquids [3]. The study of these phenomena has typically been carried out assuming the dressing of the particle is in equilibrium [4], however recent experiments have begun addressing nonequilibrium phenomena associated with the formation of these strongly correlated states [5][6][7]. The theoretical analysis poses one of the most formidable challenges in condensed matter physics, requiring accurately capturing the dynamics of strongly interacting quantum phases of matter [3,9,10]. In this work we provide an essentially exact numerical study of the formation of a correlation hole around an impurity injected into a onedimensional gas of hardcore bosons, also known as the Tonks-Girardeau (TG) gas [11,12]. Intriguingly, we find the most striking features when the particle is injected supersonically. The physics of fast particles is responsible for a rich variety of phenomena, such as flutter in aerodynamics, Cerenkov radiation [13], and bremsstrahlung [14]. Our results provide an example of new physics induced by supersonic motion in a non-relativistic quantum system. Previous works on fast propagation in Bose gases assumed either a weakly coupled gas described by a set of noninteracting Bogoliubov excitations [15][16][17][18][19][20], or a strongly interacting system treated within a low-energy effective field theory approach [21][22][23]. In this paper we find that there are novel features that require both the strong coupling regime and a high energy impurity, thus going beyond the regime addressed in previous works.Our main observations in tracking the fate of the impurity injected into a 1D quantum liquid are twofold. Firstly, the injected particle forms a strongly correlated state with the quantum liquid that does not come to a full stop, inste...

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confidence: 94%

Quantum flutter of supersonic particles in one-dimensional quantum liquids

2012

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“…We begin by recalling the conventional theory of the ČR (Frank-Tamm [2,5,24,40]). A relativistic point charge is moving with velocity v ¼ βc inside a homogeneous medium with refractive index n, where c is the speed of light.…”

Section: Conventional Theory Of the čErenkov Effectmentioning

confidence: 99%

“…The amplitudes of the ČR transitions are also affected by the OAM since the electron and photon OAM set the orders of the Bessel functions in Eq. (2). Plotting the amplitudes, Figs.…”

Section: Quantum Derivation: the Matrix Elementmentioning

confidence: 99%

“…Although it has been 80 years since its first observation [1], surprisingly little attention was given to the importance of the quantum nature of the charged particles producing the radiation. Since its discovery, the Čerenkov effect has become a fundamental part of many fields [2]: Devices like the ring-imaging Čerenkov detector are used for cosmic radiation measurements [3,4], while other implications also suggest novel acceleration methods [5], and even an unusual imaging tool in biology [6,7]. Because of the fundamental nature of ČR, it is found in many different physical systems, such as in nonlinear optics [8][9][10][11], it is used in the design of quantum cascade lasers [12], and it is predicted to yield the generation of entangled photon pairs [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Quantum Čerenkov Radiation: Spectral Cutoffs and the Role of Spin and Orbital Angular Momentum

et al. 2016

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We show that the well-known Čerenkov effect contains new phenomena arising from the quantum nature of charged particles. The Čerenkov transition amplitudes allow coupling between the charged particle and the emitted photon through their orbital angular momentum and spin, by scattering into preferred angles and polarizations. Importantly, the spectral response reveals a discontinuity immediately below a frequency cutoff that can occur in the optical region. Near this cutoff, the intensity of the conventional Čerenkov radiation (ČR) is very small but still finite, while our quantum calculation predicts exactly zero intensity above the cutoff. Below that cutoff, with proper shaping of electron beams (ebeams), we predict that the traditional ČR angle splits into two distinctive cones of photonic shockwaves. One of the shockwaves can move along a backward cone, otherwise considered impossible for conventional ČR in ordinary matter. Our findings are observable for ebeams with realistic parameters, offering new applications including novel quantum optics sources, and opening a new realm for Čerenkov detectors involving the spin and orbital angular momentum of charged particles.

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“…Experimentally, this radiation was discovered by Pavel Cherenkov [39] and, theoretically, it was formalized by Frank & Tamm [40]. Nowadays, this effect is well understood and has been proved useful in a wide range of applications in applied and experimental physics [41], including high-energy particle physics, detection of cosmic rays in astrophysical measurements [42], development of novel electromagnetic sources [43][44][45], localized sensing in biological systems [46], spectroscopy of complex nanostructures [47]. In recent years, there has been significant interest in the manipulation of Cherenkov radiation inside or in the vicinity of electromagnetic structured media [48][49][50][51][52][53][54][55][56][57][58][59][60][61].…”

Section: Transforming Space To Manipulate the Emission Of Light (A) Cmentioning

confidence: 99%