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SUPERGALAX

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Highly sensitive detection of single microwave photons with coherent quantum net...

Highly sensitive detection of single microwave photons with coherent quantum network of superconducting qubits for searching galactic axions Detection of single photons in the microwave range has a number of applications ranging from galactic dark matter axions searches to quantum computing and metrology. We propose a novel approach to acquisition of extremely low ener... ver más

31/12/2023

CNR

2M€

Presupuesto del proyecto: 2M€

Líder del proyecto

CONSIGLIO NAZIONALE DELLE RICERCHE No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Ver 8 Participantes

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2023-12-31

FETOPEN-01-2018-2019-2020: FET-Open Challenging Current Thinki...

I+D

Cerrada hace 6 años

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8 Participantes

CNR

424.35K€ | Lider

INGENIERIA Y MONTAJES MONZON

248.77K€ | Participante

LOUGHBOROUGH UNIVERSITY

386.46K€ | Participante

INFN

226.25K€ | Participante

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Duración del proyecto: 52 meses Fecha Inicio: 2019-08-16
Fecha Fin: 2023-12-31

Líder del proyecto

CONSIGLIO NAZIONALE DELLE RICERCHE No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 2M€

Descripción del proyecto Detection of single photons in the microwave range has a number of applications ranging from galactic dark matter axions searches to quantum computing and metrology. We propose a novel approach to acquisition of extremely low energy microwave signals (~1 GHz), based on the general concept of a passive quantum detection. For such highly sensitive detector (quantum antenna) the key novel concept we intend to use is the coherent quantum network composed of a large amount of strongly interacting superconducting qubits embedded in a low dissipative superconducting resonator. We will fabricate and explore the dynamics of coherent quantum networks based on two types of superconducting qubits: transmons and flux qubits. A spatially distributed network of superconducting qubits interacting off-resonance with the incoming radiation, shows the collective ac Stark effect that can be measured even in the limit of single photon counting. The interaction of the signal with the collective quantum states occurring in the network of superconducting qubits has the fundamental character of a quantum non-demolition measurement, whereby the quantum states of the signal and the collective states of qubits become gradually entangled. In particular, by employment of the network of large number of qubits (N) and utilization of a collective mode established in the network, we expect to exceed the standard quantum limit and reach the so-called Heisenberg limit of sensitivity which is proportional to 1/N instead of ~1/√N in case of N non directly interacting qubits. Assessment of the progress will be done by testing arrays with increasing number of superconducting qubits by using complementary experiments with different single photon sources. The feasibility of the superconducting network detector for galactic dark matter axions search will be finaly tested by axion conversion experiment in a magnetic field.

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