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RECENT POSTS IN THIS TOPIC
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Joe Schindler: on 6/21/21 at 1:03am UTC, wrote ABSTRACT: Counting the number of photons in an electromagnetic mode is...
RECENT FORUM POSTS
Georgina Woodward: "Hi Markus, In regard to "what is seen next?" David Eagleman has a..." in The Room in the Elephant:...
Stefan Weckbach: "Dear Lorraine, “If you will forgive me for saying so, the situation is..." in The Present State of...
Georgina Woodward: "Hi Markus, thank you for sharing your ideas. Re. the Guinea pigs copies,..." in The Room in the Elephant:...
Georgina Woodward: "Perhaps the idea of consciousness causing collapse is being overthought? ..." in Consciousness and the...
Lorraine Ford: "Stefan, I would say that we individual human beings, and the rest of the..." in The Present State of...
Georgina Woodward: "Thank you John. What did you think about the questioning whether altitude..." in The Nature of Time
John Cox: "Sorry, Georgina, I have had a busy summer and am racing the change of..." in The Nature of Time
Jim Snowdon: "If the Earth did not have it`s rotational motion, the apparent time of day..." in The Quantum Clock-Maker...
RECENT ARTICLES
click titles to read articles
Reconstructing Physics
New photon experiment gives new meta-framework, 'constructor theory,' a boost.
The Quantum Engineer: Q&A with Alexia Auffèves
Experiments seek to use quantum observations as fuel to power mini motors.
The Quantum Clock-Maker Investigating COVID-19, Causality, and the Trouble with AI
Sally Shrapnel, a quantum physicist and medical practitioner, on her experiments into cause-and-effect that could help us understand time’s arrow—and build better healthcare algorithms.
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FQXi BLOGS
September 26, 2021
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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