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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...
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Steve Dufourny: "If we try so to consider these 4 lie groups and the 3D spheres like..." in The Noise of Gravitons
Steve Dufourny: "Let s try please dear members of FQXi, let s forget our vanity, lets forget..." in Global Collaboration
Steve Dufourny: "I play guitar and piano, let s imagine that this consciousness is a..." in Mathematical Models of...
Steve Dufourny: "It is this which seems important, this generality of systems more our..." in Mathematical Models of...
Steve Dufourny: "The point important at my humble opinion to understand this consciousness..." in Can We Feel What It’s...
Steve Dufourny: "it is a new physics and we need to know more, how they interact, how are..." in Can We Feel What It’s...
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click titles to read articles
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A meditating mathematician is developing a theory of conscious experience to help understand the boundary between the quantum and classical world.
Can We Feel What It’s Like to Be Quantum?
Underground experiments in the heart of the Italian mountains are testing the links between consciousness and collapse theories of quantum physics.
The Thermodynamic Limits of Intelligence: Q&A with David Wolpert
Calculating the energy needed to acquire and compute information could help explain the (in)efficiency of human brains and guide the search for extra-terrestrial intelligence.
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FQXi BLOGS
June 27, 2022
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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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