The 22nd International Conference on Ultrafast Phenomena 2020, 2020
By ultrafast spectroscopy we provide experimental evidence of superextensive charging in organic ... more By ultrafast spectroscopy we provide experimental evidence of superextensive charging in organic quantum batteries constructed as microcavities based on a double dielectric-mirror structure containing a thin film of a Lumogen-F dye blended in a polystyrene matrix.
2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim, 2011
ABSTRACT We present a metamaterial design based on the tight-binding properties of coupled optica... more ABSTRACT We present a metamaterial design based on the tight-binding properties of coupled optical-cavity arrays and quantum-mechanical atom-cavity arrays. By tailoring their dispersion properties, waveguiding of photonic and polaritonic Bloch waves can be engineered.
High heat fluxes are encountered in numerous applications, such as on the surfaces of hypersonic ... more High heat fluxes are encountered in numerous applications, such as on the surfaces of hypersonic vehicles in flight, in fires, and within engines. The calibration of heat flux gauges may be performed in a dual cavity cylindrical blackbody. Insertion of instruments into the cavity disturbs the thermal equilibrium resulting in a transient calibration environment. To characterize the transient heat fluxes, experiments were performed on a dual cavity cylindrical blackbody at nominal temperatures varying from 800°C to 1900°C in increments of 100°C. The pre-insertion, steady state, axial temperature profile is compared experimentally and numerically. Detailed transient thermal models have been developed to simulate the heat flux calibration process at two extreme fluxes: the high flux is 1 MW/m2 and the relatively low is 70 kW/m2. Based on experiments and numerical analysis, the optimum heat flux sensor insertion location as measured from the center partition was determined. The effect of...
In a major step toward the development of a quantum battery, superabsorption has been achieved in... more In a major step toward the development of a quantum battery, superabsorption has been achieved in an organic microcavity.
The quantum Cheshire cat (QCC) thought experiment proposes that a quantum object's property (... more The quantum Cheshire cat (QCC) thought experiment proposes that a quantum object's property (e.g polarisation, spin, etc.) can be separated from its physical body or disembodied. This conclusion arose from an argument that interprets a zero weak value of polarisation as no polarisation. We show that this argument is incomplete, as a zero weak value reading can also correspond to linear polarisation. Nevertheless, through a generalisation of the QCC, we complete their argument by explicitly excluding the possibility of linear polarisation as a consistent interpretation. We go further, and introduce the dual of the generalised QCC. The dual QCC exhibits an intriguing effect, where a horizontally-polarised interferometer with just one arm, can give rise to interference which is vertically-polarised. The interference appears to arise as the result of the phase difference between the physical arm and a phantom arm. This peculiar effect arises from the interplay between the pre-select...
James Q. Quach, ∗ Timothy C. Ralph, and William J. Munro 4 Institute for Photonics and Advanced S... more James Q. Quach, ∗ Timothy C. Ralph, and William J. Munro 4 Institute for Photonics and Advanced Sensing and School of Physical Sciences, The University of Adelaide, South Australia 5005, Australia Centre for Quantum Computation and Communication Technology, School of Mathematics and Physics, University of Queensland, Brisbane, Queensland 4072, Australia. NTT Basic Research Laboratories & NTT Research Center for Theoretical Quantum Physics, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan
The 22nd International Conference on Ultrafast Phenomena 2020, 2020
By ultrafast spectroscopy we provide experimental evidence of superextensive charging in organic ... more By ultrafast spectroscopy we provide experimental evidence of superextensive charging in organic quantum batteries constructed as microcavities based on a double dielectric-mirror structure containing a thin film of a Lumogen-F dye blended in a polystyrene matrix.
2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim, 2011
ABSTRACT We present a metamaterial design based on the tight-binding properties of coupled optica... more ABSTRACT We present a metamaterial design based on the tight-binding properties of coupled optical-cavity arrays and quantum-mechanical atom-cavity arrays. By tailoring their dispersion properties, waveguiding of photonic and polaritonic Bloch waves can be engineered.
High heat fluxes are encountered in numerous applications, such as on the surfaces of hypersonic ... more High heat fluxes are encountered in numerous applications, such as on the surfaces of hypersonic vehicles in flight, in fires, and within engines. The calibration of heat flux gauges may be performed in a dual cavity cylindrical blackbody. Insertion of instruments into the cavity disturbs the thermal equilibrium resulting in a transient calibration environment. To characterize the transient heat fluxes, experiments were performed on a dual cavity cylindrical blackbody at nominal temperatures varying from 800°C to 1900°C in increments of 100°C. The pre-insertion, steady state, axial temperature profile is compared experimentally and numerically. Detailed transient thermal models have been developed to simulate the heat flux calibration process at two extreme fluxes: the high flux is 1 MW/m2 and the relatively low is 70 kW/m2. Based on experiments and numerical analysis, the optimum heat flux sensor insertion location as measured from the center partition was determined. The effect of...
In a major step toward the development of a quantum battery, superabsorption has been achieved in... more In a major step toward the development of a quantum battery, superabsorption has been achieved in an organic microcavity.
The quantum Cheshire cat (QCC) thought experiment proposes that a quantum object's property (... more The quantum Cheshire cat (QCC) thought experiment proposes that a quantum object's property (e.g polarisation, spin, etc.) can be separated from its physical body or disembodied. This conclusion arose from an argument that interprets a zero weak value of polarisation as no polarisation. We show that this argument is incomplete, as a zero weak value reading can also correspond to linear polarisation. Nevertheless, through a generalisation of the QCC, we complete their argument by explicitly excluding the possibility of linear polarisation as a consistent interpretation. We go further, and introduce the dual of the generalised QCC. The dual QCC exhibits an intriguing effect, where a horizontally-polarised interferometer with just one arm, can give rise to interference which is vertically-polarised. The interference appears to arise as the result of the phase difference between the physical arm and a phantom arm. This peculiar effect arises from the interplay between the pre-select...
James Q. Quach, ∗ Timothy C. Ralph, and William J. Munro 4 Institute for Photonics and Advanced S... more James Q. Quach, ∗ Timothy C. Ralph, and William J. Munro 4 Institute for Photonics and Advanced Sensing and School of Physical Sciences, The University of Adelaide, South Australia 5005, Australia Centre for Quantum Computation and Communication Technology, School of Mathematics and Physics, University of Queensland, Brisbane, Queensland 4072, Australia. NTT Basic Research Laboratories & NTT Research Center for Theoretical Quantum Physics, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan
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Papers by James Quach