Three-photon coherence in a ladder-type atomic system

Noh, Heung‐Ryoul; Moon, Han Seb

doi:10.1103/physreva.92.013807

Cited by 10 publications

(9 citation statements)

References 33 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such possibility has been originally proposed by Agarwal and coworkers [24] and demonstrated in [25]. Besides TPA, a large absorption at resonance can also * pradeep.kumar@iitrpr.ac.in arise due to three-photon coherence, termed as three photon electromagnetically induced absorption [26,27].…”

Section: Introductionmentioning

confidence: 92%

Optical switching and bistability in four-level atomic systems

Kumar

Dasgupta

2016

Phys. Rev. A

View full text Add to dashboard Cite

We explore the coherent control of nonlinear absorption of intense laser fields in four-level atomic systems. For instance, in a four-level ladder system, a coupling field creates electromagnetically induced transparency (EIT) with Aulter-Townes doublet for the probe field while the control field is absent. A large absorption peak appears at resonance as the control field is switched on. We show how such a large absorption leads to optical switching. Further, this large absorption gets diminished and a transparency window appears due to the saturation effects as the strength of the probe field is increased. We further demonstrate that the threshold of the optical bistability can be modified by suitable choices of the coupling and the control fields. In a four-level Y-type configuration, the effect of the control field on saturable absorption (SA) and reverse saturable absorption (RSA) is highlighted in the context of nonlinear absorption of the probe field. We achieve RSA and SA in a simple atomic system just by applying a control field.

show abstract

Section: Introductionmentioning

confidence: 92%

Optical switching and bistability in four-level atomic systems

Kumar

Dasgupta

2016

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…One-way EPR steering plays an important role in quantum information and fundamental physics. Over the past decades, much work has been devoted to finding effective ways to test the quantum effect in atomic systems, [30][31][32][33][34][35] such as quantum jumps in atomic systems, [30] strong coupling of optical nanoantennas and atomic systems, [32] and weak-interaction effects in heavy atomic systems. [33] Many schemes for quantum steering based on atomic systems have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Controlling stationary one-way steering in a three-level atomic ensemble

Peng 彭,

Xu 徐,

Liu 刘

et al. 2023

Chinese Phys. B

View full text Add to dashboard Cite

We propose a scheme for establishing the stationary one-way quantum steering in a three-level Λ-type atomic ensemble. In our system, the cavity modes are generated from two atomic dipole-allowed transitions, which are in turn driven by two external classical fields. The atomic ensemble can act as a engineered reservoir to put two cavity modes into a squeezed state by two Bogoliubov dissipation pathways. When the damping rates of the two cavity modes are different, the steady-state one-way quantum steering of the intracavity and output fields is presented by adjusting the normalized detuning. The physical mechanism is analyzed based on dressed state representation and Bogoliubov mode transformation. The achieved optical one-way quantum steering has potential application in quantum information tasks for quantum secret sharing protocol.

show abstract

“…As our experiments are done in the HPB regime, none of the aforementioned techniques are immediately suitable for our purposes. Furthermore, quantum optics experiments [39][40][41][42][43][44] often require long-integration times [45], meaning that lasers may need to remain locked for several hours.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous two-photon resonant optical laser locking (STROLLing) in the hyperfine Paschen–Back regime

et al. 2018

View full text Add to dashboard Cite

We demonstrate a technique to lock simultaneously two laser frequencies to each step of a two-photon transition in the presence of a magnetic field sufficiently large to gain access to the hyperfine Paschen-Back regime. A ladder configuration with the 5, 5, and 5 terms in a thermal vapor of 87 atoms is used. The two lasers remain locked for more than 24 h. For the sum of the laser frequencies, which represents the stability of the two-photon lock, we measure a frequency instability of less than the Rb natural linewidth of 6 MHz for nearly all measured timescales.

show abstract

Three-photon coherence in a ladder-type atomic system

Cited by 10 publications

References 33 publications

Optical switching and bistability in four-level atomic systems

Optical switching and bistability in four-level atomic systems

Controlling stationary one-way steering in a three-level atomic ensemble

Simultaneous two-photon resonant optical laser locking (STROLLing) in the hyperfine Paschen–Back regime

Contact Info

Product

Resources

About