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Collective Effects and Entanglement for Advancing Quantum Metrology

Location

Physical Measurement Laboratory, Quantum Physics Division

RO# Location
50.68.92.B7953 Boulder, CO

Please note: This Agency only participates in the February and August reviews.

Advisers

Name E-mail Phone
Thompson, James K jkt@jila.colorado.edu 303.492.7649

Description

What are things you can do with many quantum objects that you fundamentally cannot do with one quantum object? The Thompson laboratory at JILA explores this question with an eye toward enhancing the fundamental precision, accuracy, and/or bandwidth of quantum measurements. Current experiments include attempting to build a millihertz linewidth laser whose coherence length would stretch from the Earth to the Sun. In other experiments we perform measurements that resolve quantum noise, allowing it to be subtracted out. The post-measurement state is entangled and can be shown to surpass the standard quantum limit on phase estimation—an estimation problem that fundamentally limits all quantum sensors from inertial sensors to the most stable atomic clocks. The two separate experiments are utilizing laser-cooled and trapped Strontium and Rubidium atoms inside of optical cavities to form extremely clean cavity-QED systems.

 

Keywords:
Quantum; Metrology; Cold atoms; Cavity QED; Cooling; Laser; Precision measurement; Entanglement; Quantum many body;

Eligibility

Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants
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