ORCID Profile
0000-0003-1934-9555
Current Organisation
Australian National University
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Quantum Physics | Degenerate Quantum Gases and Atom Optics | Atomic and Molecular Physics
Expanding Knowledge in the Physical Sciences | Emerging Defence Technologies | Mineral Exploration not elsewhere classified |
Publisher: Wiley
Date: 30-04-2019
Publisher: American Physical Society (APS)
Date: 20-06-2012
Publisher: Informa UK Limited
Date: 05-2015
DOI: 10.1128/MCB.00012-15
Publisher: IEEE
Date: 06-2013
Publisher: IOP Publishing
Date: 04-2013
Publisher: Optica Publishing Group
Date: 02-02-2021
Abstract: Photothermal effects can alter the response of an optical cavity, for ex le, by inducing self-locking behavior or unstable anomalies. The consequences of these effects are often regarded as parasitic and generally cause limited operational performance of the cavity. Despite their importance, however, photothermal parameters are usually hard to characterize precisely. In this work, we use an optical cavity strongly coupled to photothermal effects to experimentally observe an optical back-action on the photothermal relaxation rate. This effect, reminiscent of the radiation-pressure-induced optical spring effect in cavity optomechanical systems, uses optical detuning as a fine control to change the photothermal relaxation process. The photothermal relaxation rate of the system can be accordingly modified by more than an order of magnitude. This approach offers an opportunity to obtain precise in situ estimations of the parameters of the cavity in a way that is compatible with a wide range of optical resonator platforms. Through this back-action effect, we are able to determine the natural photothermal relaxation rate and the effective thermal conductivity of cavity mirrors with unprecedented resolution.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 21-02-2020
Abstract: Photothermal-cavity nonlinearity induces a new transparency effect with demonstrated agreement between model and experiment.
Publisher: Springer Science and Business Media LLC
Date: 02-2011
DOI: 10.1038/NCOMMS1175
Publisher: The Optical Society
Date: 15-01-2016
Publisher: American Physical Society (APS)
Date: 21-04-2014
Publisher: IOP Publishing
Date: 13-03-2012
Publisher: AIP
Date: 2009
DOI: 10.1063/1.3131299
Publisher: IOP Publishing
Date: 08-06-2012
Publisher: Springer Science and Business Media LLC
Date: 26-09-2016
DOI: 10.1038/NPHYS3901
Publisher: IOP Publishing
Date: 24-11-2014
Publisher: The Optical Society
Date: 12-11-2008
DOI: 10.1364/OL.33.002659
Abstract: We implement double electromagnetically induced transparency (DEIT) in rubidium vapor using a tripod-shaped energy-level scheme consisting of hyperfine magnetic sublevels of the 5S1/2-->5P1/2 transition. We show experimentally that through the use of DEIT one can control the contrast of transparency windows as well as group velocities of the two signal fields. In particular, the group velocities can be equalized, which holds promise to greatly enhance nonlinear optical interaction between these fields.
Publisher: The Optical Society
Date: 05-2018
DOI: 10.1364/OE.26.012424
Publisher: AIP Publishing LLC
Date: 2014
DOI: 10.1063/1.4903139
Publisher: AIP Publishing LLC
Date: 2014
DOI: 10.1063/1.4903159
Publisher: Proceedings of the National Academy of Sciences
Date: 15-11-2016
Abstract: Challenging quantum mechanical predictions is an important task to better understand the underlying principles of nature and possibly develop novel applications. Quantum entanglement as one of the key features is often investigated in optical experiments to push the known limits from smaller to larger scales, for ex le by increasing the number of entangled systems, their separation, or dimensionality. In the present study we pursue another route and investigate photons with large quantum numbers. We demonstrate entanglement between a photon with orbital angular momentum quantum numbers up to 10,010 and its partner encoded in polarization. The results show how complex the structure of entangled photons can be and hint at the large information content a single quantum system is able to carry.
Publisher: The Optical Society
Date: 19-02-2016
DOI: 10.1364/OE.24.004042
Publisher: Springer Science and Business Media LLC
Date: 10-12-2015
DOI: 10.1038/SREP17633
Abstract: Optical resonance is central to a wide range of optical devices and techniques. In an optical cavity, the round-trip length and mirror reflectivity can be chosen to optimize the circulating optical power, linewidth and free-spectral range (FSR) for a given application. In this paper we show how an atomic spinwave system, with no physical mirrors, can behave in a manner that is analogous to an optical cavity. We demonstrate this similarity by characterising the build-up and decay of the resonance in the time domain and measuring the effective optical linewidth and FSR in the frequency domain. Our spinwave is generated in a 20 cm long Rb gas cell, yet it facilitates an effective FSR of 83 kHz, which would require a round-trip path of 3.6 km in a free-space optical cavity. Furthermore, the spinwave coupling is controllable enabling dynamic tuning of the effective cavity parameters.
Publisher: American Physical Society (APS)
Date: 04-08-2014
Publisher: IOP Publishing
Date: 07-10-2009
Publisher: IEEE
Date: 08-2011
Publisher: The Optical Society
Date: 27-02-2012
DOI: 10.1364/AO.51.000873
Publisher: Springer Science and Business Media LLC
Date: 12-06-2011
DOI: 10.1038/NPHYS2021
Publisher: AIP
Date: 2009
DOI: 10.1063/1.3131320
Publisher: IEEE
Date: 08-2011
Publisher: The Optical Society
Date: 21-09-2015
DOI: 10.1364/OE.23.024937
Publisher: IEEE
Date: 09-2014
Start Date: 03-2021
End Date: 03-2024
Amount: $558,000.00
Funder: Australian Research Council
View Funded Activity