Phase Shift of a Weak Coherent Beam Induced by a Single Atom

Aljunid, S. A.; Tey, Meng Khoon; Chng, Brenda; Liew, Timothy Chi Hin; Maslennikov, Gleb; Scarani, Valerio; Kurtsiefer, Christian

doi:10.1103/physrevlett.103.153601

Cited by 77 publications

(93 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that we have chosen β 1 = β 2 = π/2. We furthermore point out that V is directly related to the phase shift φ that the scattering object induces in E out [46,47], namely…”

Section: Visibilitymentioning

confidence: 99%

Light scattering under nanofocusing: Towards coherent nanoscopies

Mohammadi

Agio

2012

Optics Communications

View full text Add to dashboard Cite

We investigate light scattering under nanofocusing in the context of coherent spectroscopy. We discuss the different mechanisms that may enhance the signal in extinction and how these depend on nanofocusing as well as on the probed system. We find that nanofocusing may improve the detection sensitivity by orders of magnitude under realistic conditions, enabling scanning implementations of coherent spectroscopy at the nanoscale.

show abstract

“…Note that we have chosen β 1 = β 2 = π/2. We furthermore point out that V is directly related to the phase shift φ that the scattering object induces in E out [46,47], namely…”

Section: Visibilitymentioning

confidence: 99%

Light scattering under nanofocusing: Towards coherent nanoscopies

Mohammadi

Agio

2012

Optics Communications

View full text Add to dashboard Cite

show abstract

“…Here, the term free space is used to describe a situation in which the atom interacts with the whole continuum of the free-space field modes and has also the characteristic freespace spatial emission properties. Besides other phenomena, the phase shift imprinted by a single quantum system onto a coherent beam has been studied in prior experiments [2]- [4]. The reported phase shifts amount to about 1 • using a single neutral atom [2] and 3 • for a single molecule [3].…”

Section: Introductionmentioning

confidence: 99%

“…The incident electromagnetic field mode is focused onto the atom by a focusing device, e.g. a large numerical aperture lens [2]- [4] or a parabolic mirror [9]. Depending on the electric field strength acting upon the atom, the atom scatters a certain amount of dipole radiation which is phase-shifted with respect to the incident field.…”

Section: Introductionmentioning

confidence: 99%

The phase shift induced by a single atom in free space

Sondermann

Leuchs

2013

J. Eur. Opt. Soc.-Rapid Publ.

View full text Add to dashboard Cite

In this article we theoretically study the phase shift a single atom imprints onto a coherent state light beam in free space. The calculations are performed in a semiclassical framework. The key parameters governing the interaction and thus the measurable phase shift are the solid angle from which the light is focused onto the atom and the overlap of the incident radiation with the atomic dipole radiation pattern. The analysis includes saturation effects and discusses the associated Kerr-type non-linearity of a single atom.

show abstract

“…In this paper, we report on measurements of the reflection of light in a tightly focused mode by a single atom in section II, complementing the observation of transmission [13] and phase shift [14]. The essence of such experiments can be understood by treating the light field classically, since the focusing geometry only modifies the boundary conditions of the electromagnetic field.…”

Section: Introductionmentioning

confidence: 99%

“…This technique has been applied to observe strong interaction of the electromagnetic fields with molecules [10,11], quantum dots [12], and single atoms [13,14] as possibly one of the cleanest physical systems for quantum information processing. * christian.kurtsiefer@gmail.com; http://www.quantumlah.org The basic configuration of such an interaction scheme is shown in figure 1.…”

Section: Introductionmentioning

confidence: 99%

Interaction of light with a single atom in the strong focusing regime

Aljunid

Chng

Lee

et al. 2011

Journal of Modern Optics

Self Cite

View full text Add to dashboard Cite

We consider the near-resonant interaction between a single atom and a focused light mode, where a single atom localized at the focus of a lens can scatter a significant fraction of light. Complementary to previous experiments on extinction and phase shift effects of a single atom, we report here on the measurement of coherently backscattered light. The strength of the observed effect suggests combining strong focusing with the well-established methods of cavity QED. We consider theoretically a nearly concentric cavity, which should allow for a strongly focused optical mode. Simple estimates show that in a such case one can expect a significant single photon Rabi frequency. This opens new perspectives and a possibility to scale up the system consisting of many atom+cavity nodes for quantum networking due to a significant technical simplification of the atom-light interfaces.

show abstract

Phase Shift of a Weak Coherent Beam Induced by a Single Atom

Abstract: We report on a direct measurement of a phase shift on a weak coherent beam by a single 87Rb atom in a Mach-Zehnder interferometer. By strongly focusing the probe mode to the location of the atom, a maximum phase shift of about 1 degree is observed experimentally.

Cited by 77 publications

References 21 publications

Light scattering under nanofocusing: Towards coherent nanoscopies

Light scattering under nanofocusing: Towards coherent nanoscopies

The phase shift induced by a single atom in free space

Interaction of light with a single atom in the strong focusing regime

Contact Info

Product

Resources

About