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Rydberg electrometry for optical lattice clocks

Fri, 2018-02-02 17:16 - Ryan Hanley
Date: 
2018-02-02
Author(s): 

W. Bowden, R. Hobson, P. Huillery, P. Gill, M. P. A. Jones, and I. R. Hill

Reference: 

Physical Review A 96, 023419 (2017)

URL: 

10.1103/PhysRevA.96.023419

Electrometry is performed using Rydberg states to evaluate the quadratic Stark shift of the 5s2 1S0-5s5p 3P0 clock transition in strontium. By measuring the Stark shift of the highly excited 5s75d 1D2 state using electromagnetically induced transparency, we characterize the electric field with sufficient precision to provide tight constraints on the systematic shift to the clock transition.

Quantitative simulation of a magneto-optical trap operating near the photon recoil limit

Fri, 2018-02-02 17:09 - Ryan Hanley
Date: 
2017-06-21 - 2017-11-22
Author(s): 

Ryan K. Hanley, Paul Huillery, Niamh C. Keegan, Alistair D. Bounds, Danielle Boddy, Riccardo Faoro & Matthew P. A. Jones

Reference: 

10.1080/09500340.2017.1401679

URL: 

10.1080/09500340.2017.1401679

We present a quantitative model for magneto-optical traps operating on narrow transitions, where the transition linewidth and the recoil shift are comparable. We combine a quantum treatment of the light scattering process with a Monte-Carlo simulation of the atomic motion.

A Rydberg-dressed Magneto-Optical Trap

Fri, 2018-02-02 17:04 - Ryan Hanley
Date: 
2018-01-11
Author(s): 

A. D. Bounds, N. C. Jackson, R. K. Hanley, R. Faoro, E. M. Bridge, P. Huillery, M. P. A. Jones

Reference: 

arXiv:1801.03846

URL: 

arXiv:1801.03846

We propose and demonstrate the laser cooling and trapping of Rydberg-dressed Sr atoms.

Probing interactions of thermal Sr Rydberg atoms using simultaneous optical and ion detection

Wed, 2017-05-03 11:10 - Ryan Hanley
Date: 
2017-04-21
Author(s): 

Hanley, Ryan K and Bounds, Alistair D and Huillery, Paul and Keegan, Niamh C and Faoro, Riccardo and Bridge, Elizabeth M and Weatherill, Kevin J and Jones, Matthew P A

Reference: 

J. Phys. B: At. Mol. Opt. Phys. 50 (2017) 115002 (9pp)

URL: 

10.1088/1361-6455/aa6e79

We demonstrate a method for probing interaction effects in a thermal beam of strontium atoms using simultaneous measurements of Rydberg EIT and spontaneously created ions or electrons. We present a Doppler-averaged optical Bloch equation model that reproduces the optical signals and allows us to connect the optical coherences and the populations.

International Conference on Integrated Quantum Photonics

Fri, 2017-02-10 15:25 - Giuliana Pensa, University of Rome La Sapienza
Date: 
2017-09-26 - 2017-09-29
Registration deadline: 
2017-06-30 (All day)
Place: 
Rome, Italy
Website: 

http://www.picque.eu/iqpconf2017/

The Conference is organized in the framework of two European PICQUE (www.picque.eu) and QUCHIP (www.quchip.eu) projects and will serve as final conference to both projects. The scientific program foresees tutorial lectures, invited seminars on scientific results, oral contributions and posters.
 
Registration fees
Early PhD registration € 240 (before 30 June2017)

PICQUE Scientific School: Architectures for Quantum Photonic Circuits

Wed, 2016-11-09 17:58 - Giuliana Pensa, University of Rome La Sapienza
Date: 
2017-02-08 - 2017-02-10
Registration deadline: 
2017-01-09 (All day)
Place: 
Nice, France
Website: 

https://picque-nice-17.sciencesconf.org/

The Initial Training Network (ITN, European Marie Curie actions) PICQUE, for ‘Photonic Integrated Compound Quantum Encoding’, organizes its last scientific school on “Architectures for Quantum Photonic Circuits".
It notably concerns young fellows and will be held at the University Côte d’Azur in Nice, France, from the 8th to the 10th of February 2017.
 

Radiation trapping in a dense cold Rydberg gas

Wed, 2016-07-27 16:56 - Ryan Hanley
Date: 
2016-07-27
Author(s): 

D. P. Sadler, E. M. Bridge, D. Boddy, A. D. Bounds, N. C. Keegan, G. Lochead, M. P. A. Jones, B. Olmos

Reference: 

Phys. Rev. A 95, 013839

URL: 

10.1103/PhysRevA.95.013839

Cold atomic gases resonantly excited to Rydberg states can exhibit strong optical nonlinearity at the single photon level. We observe that in such samples radiation trapping leads to an additional mechanism for Rydberg excitation.

Tunable cw UV laser with <35 kHz absolute frequency instability for precision spectroscopy of Sr Rydberg states

Tue, 2016-07-26 16:53 - Ryan Hanley
Date: 
2016-01-28
Author(s): 

Elizabeth M. Bridge, Niamh C. Keegan, Alistair D. Bounds, Danielle Boddy, Daniel P. Sadler, and Matthew P. A. Jones

Reference: 

Opt. Express 24, 2281-2292 (2016)

URL: 

10.1364/OE.24.002281

We present a solid-state laser system that generates over 200 mW of continuous-wave, narrowband light, tunable from 316.3 nm – 317.7 nm and 318.0 nm – 319.3 nm.

Difference-frequency combs in cold atom physics

Tue, 2016-07-26 16:46 - Ryan Hanley
Date: 
2016-05-04
Author(s): 

Russell Kliese, Nazanin Hoghooghi, Thomas Puppe, Felix Rohde, Alexander Sell, Armin Zach, Patrick Leisching, Wilhelm Kaenders, Niamh C. Keegan, Alistair D. Bounds, Elizabeth M. Bridge, Jack Leonard, Charles S. Adams, Simon L. Cornish, Matthew P. A. Jones

Reference: 

Eur. Phys. J. Special Topics 225, 2775–2784 (2016)

URL: 

10.1140/epjst/e2016-60092-0

Optical frequency combs provide the clockwork to relate optical frequencies
to radio frequencies. Hence, combs allow to measure optical frequencies
with respect to a radio frequency where the accuracy is limited
only by the reference signal. In order to provide a stable link between the
radio and optical frequencies, the two parameters of the frequency comb
must be fixed: the carrier envelope offset frequency fceo and the pulse

Quantum Interfaces with Nano-opto-electro-mechanical devices: Applications and Fundamental Physics

Tue, 2016-06-21 00:05 - David Vitali
Date: 
2016-06-21 - 2016-08-05
Registration deadline: 
2016-07-15 (All day)
Place: 
Erice, Sicily, Italy
Website: 

http://d7.unicam.it/iquoems/ericeconference

Dear Colleagues,
 
I would kindly draw your attention to the international conference "Quantum Interfaces with Nano-opto-electro-mechanical devices: Applications and Fundamental Physics" which will be held at the Ettore Majorana Foundation and Center for Scientific Culture, Erice (Sicily), Italy, from Sunday July 31 2016 (expected day of arrival) to Friday August 5 2016 (departure in the afternoon). 
 
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