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RECENT POSTS IN THIS TOPIC
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robin 435: "rsvsfascxseaczcfadv" in Anatomy of spacetime and...
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Nick Fury: "Hi, when you get older there is not a single part of your body that is..." in Quantum Measurement and...
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john hele: "There are many freelancers who offer to write your dissertation for a very..." in Causal Discovery in the...
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click titles to read articles
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Physicists lay out blueprints for running a 'Wigner's Friend' experiment using an artificial intelligence, built on a quantum computer, as an 'observer.'
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Using a brain-computer interface to create a consciousness 'add-on' to help test Integrated Information Theory.
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FQXi BLOGS
December 1, 2022
CATEGORY:
Blog
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TOPIC: Measuring the number of photons in a microwave mode by Benjamin Huard [refresh]
TOPIC: Measuring the number of photons in a microwave mode by Benjamin Huard [refresh]
ABSTRACT:
Counting the number of photons in an electromagnetic mode is an important tool for quantum information processing. In order to perform a single shot measurement, one usually encodes information about the photon number into a qubit state and read out the qubit. Repeating this procedure while varying the encoded single bit of information enables to pinpoint the number of photons. In this talk, I will present two experiments that address two main challenges in photocounting.
First, I will show how one can avoid the sequential repetition of qubit measurements and instead use a single superconducting qubit in order to multiplex the measurement of the photon number in a stationary microwave mode.
Second, I will show how we could convert a stationary mode counter into a photocounter of traveling wave packets using a quantum memory.
RELATED PAPERS
[1] Multiplexed photon number measurement A. Essig, Q. Ficheux, T. Peronnin, N. Cottet, R. Lescanne, A. Sarlette, P. Rouchon, Z. Leghtas, B. Huard https://arxiv.org/abs/2001.03217
[2] Number-resolved photocounter for propagating microwave mode R. Dassonneville, R. Assouly, T. Peronnin, P. Rouchon, B. Huard https://arxiv.org/abs/2004.05114
Keywords: #quantum #measurement #IAF
This forum thread is open to the public.
Counting the number of photons in an electromagnetic mode is an important tool for quantum information processing. In order to perform a single shot measurement, one usually encodes information about the photon number into a qubit state and read out the qubit. Repeating this procedure while varying the encoded single bit of information enables to pinpoint the number of photons. In this talk, I will present two experiments that address two main challenges in photocounting.
First, I will show how one can avoid the sequential repetition of qubit measurements and instead use a single superconducting qubit in order to multiplex the measurement of the photon number in a stationary microwave mode.
Second, I will show how we could convert a stationary mode counter into a photocounter of traveling wave packets using a quantum memory.
RELATED PAPERS
[1] Multiplexed photon number measurement A. Essig, Q. Ficheux, T. Peronnin, N. Cottet, R. Lescanne, A. Sarlette, P. Rouchon, Z. Leghtas, B. Huard https://arxiv.org/abs/2001.03217
[2] Number-resolved photocounter for propagating microwave mode R. Dassonneville, R. Assouly, T. Peronnin, P. Rouchon, B. Huard https://arxiv.org/abs/2004.05114
Keywords: #quantum #measurement #IAF
This forum thread is open to the public.
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