Controllable enhanced dragging of light in ultradispersive media

Davuluri, Sankar; Rostovtsev, Yuri V.

doi:10.1103/physreva.86.013806

Cited by 33 publications

(22 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 . Substituting equations (11)(12)(13)(14) into equations (8-10)) the equations of motion for the mechanical oscillator and cavity field in the frame of reference co-rotating with rotating table are given as…”

Section: Rotation Detectionmentioning

confidence: 99%

“…Hence, a very sensitive force detector can potentially be used as a rotation detector. In our previous work [13], Coriolis force induced displacements are measured using enhanced longitudinal Fizeau drag effect [14] to detect the rotation. In this paper, we propose a rotation detector based on the effects of the Coriolis force on the optomechanical cavity placed on a rotating table.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Absolute rotation detection by Coriolis force measurement using optomechanics

Davuluri

2016

New J. Phys.

Self Cite

View full text Add to dashboard Cite

In this article, we present an application of the optomechanical cavities for absolute rotation detection. Two optomechanical cavities, one in each arm, are placed in a Michelson interferometer. The interferometer is placed on a rotating table and is moved with a uniform velocity ofȳ with respect to the rotating table. The Coriolis force acting on the interferometer changes the length of the optomechanical cavity in one arm, while the length of the optomechanical cavity in the other arm is not changed. The phase shift corresponding to the change in the optomechanical cavity length is measured at the interferometer output to estimate the angular velocity of the absolute rotation. An analytic expression for the minimum detectable rotation rate corresponding to the standard quantum limit of measurable Coriolis force in the interferometer is derived. Squeezing technique is discussed to improve the rotation detection sensitivity by a factor of g w m m at 0 K temperature, where g m and w m are the damping rate and angular frequency of the mechanical oscillator. The temperature dependence of the rotation detection sensitivity is studied.

show abstract

Section: Rotation Detectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Absolute rotation detection by Coriolis force measurement using optomechanics

Davuluri

2016

New J. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…This effect can be used to control the group velocity of laser pulses in a slow-light medium [22,23]. It has also been shown theoretically that the light drag effect can be significantly enhanced using a slow-light material [24,25]. Moreover, a recent experiment demonstrated that spinning a slow-light material enhances the image rotation induced by rotary photon drag effect [26].…”

mentioning

confidence: 98%

“…Therefore, one can enhance the observed effect by an even larger factor, which could enable accurate detection of extremely slow speeds [24]. Note, however, that for very large group indices one has to keep higher order corrections in Eq.…”

mentioning

confidence: 99%

Light-Drag Enhancement by a Highly Dispersive Rubidium Vapor

et al. 2016

View full text Add to dashboard Cite

“…While most of the applications utilize stationary vapor cells, the recent demonstration of measuring the motion of a moving atomic vapor cell displays a way of applying an atomic vapor cell as a mo- tional sensor [11]. Here, we exploit quantum interference in electromagnetically induced transparency (EIT) effect for a moving Doppler-broadened atomic vapor cell and determine the velocity of the vapor cell by measuring the phase shift of light passing through the moving medium [11][12][13][14]. We demonstrate the sensitivity of the velocity of the atomic vapor to the level of 31 µm s −1 after 32 ms of integration time or equivalently 5.5 µm s −1 Hz −1/2 for short integration times.…”

mentioning

confidence: 99%

Quantum-Enhanced Velocimetry with Doppler-Broadened Atomic Vapor

et al. 2020

View full text Add to dashboard Cite

Traditionally, measuring the center-of-mass (c.m.) velocity of an atomic ensemble relies on measuring the Doppler shift of the absorption spectrum of single atoms in the ensemble. Mapping out the velocity distribution of the ensemble is indispensable when determining the c.m. velocity using this technique. As a result, highly sensitive measurements require preparation of an ensemble with a narrow Doppler width. Here, we use a dispersive measurement of light passing through a moving room temperature atomic vapor cell to determine the velocity of the cell in a single shot with a short-term sensitivity of 5.5 µm s −1 Hz −1/2 . The dispersion of the medium is enhanced by creating quantum interference through an auxiliary transition for the probe light under electromagnetically induced transparency condition. In contrast to measurement of single atoms, this method is based on the collective motion of atoms and can sense the c.m. velocity of an ensemble without knowing its velocity distribution. Our results improve the previous measurements by 3 orders of magnitude and can be used to design a compact motional sensor based on thermal atoms.Measuring motion of atoms plays a significant role in performing high precision inertial sensing, such as gravity, gravity gradient, and rotation [1]. It has also been used to study fundamental physics, including quantum tests of the equivalence principle [2,3], and measurements of the fine structure constant [4] and Newtons constant G [5]. Current atoms-based motional sensors rely on measuring the first-order Doppler shift of the absorption spectrum of some narrow linewidth transition of single atoms in a large thermal ensemble. One method is the Doppler sensitive two-photon Raman velocimetry that uses a pair of counterpropagating laser fields to drive a pair of long-lived states of atoms [6]. By detuning the relative frequency of the counterpropagating laser fields, a subgroup of atoms with finite velocity width, which is determined by the duration of the pulse length, can be selected. Because of the finite temperature of the ensemble, the c.m. velocity is then determined by scanning the detuning of the laser fields to map out the Doppler distribution and fit the one-dimensional the Maxwell-Boltzmann distribution with the data as shown in Fig. 1 (left). The sensitivity is, therefore, largely limited by the Doppler broadening of the atomic ensemble used. To improve the sensitivity, one would have to prepare an ensemble at ultralow temperature [7], which requires a complex laser cooling and trapping setup.Warm atomic vapor cells have been applied in optical magnetometers [8], atomic clocks [9], and inertial sensing [10]. The compact and versatile features of the apparatus make them excellent candidates for deployable high precision sensing devices. While most of the applications utilize stationary vapor cells, the recent demonstration of measuring the motion of a moving atomic vapor cell displays a way of applying an atomic vapor cell as a mo- * chen zilong@ntu.edu.sg † sylan@ntu.edu....

show abstract

Controllable enhanced dragging of light in ultradispersive media

Cited by 33 publications

References 51 publications

Absolute rotation detection by Coriolis force measurement using optomechanics

Absolute rotation detection by Coriolis force measurement using optomechanics

Light-Drag Enhancement by a Highly Dispersive Rubidium Vapor

Quantum-Enhanced Velocimetry with Doppler-Broadened Atomic Vapor

Contact Info

Product

Resources

About