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Q-SENS2 Report Summary

Project ID: 337135
Funded under: FP7-IDEAS-ERC
Country: Italy

Periodic Report Summary 2 - Q-SENS2 (Quantum-Enhanced Sensors with Single Spins)

Precision measurements are among the most important applications of quantum physics.
For the past decade, concepts derived from quantum information science have been explored to enhance precision measurements, since entangled states have been recognized as potentially providing sensitivities beyond the classical limit.
Recent advances in quantum information science have also enabled the development of new types of controlled quantum systems for the realizations of solid-state spin qubits. The use of these qubits as quantum sensors may enable new capabilities, such as an unprecedented combination of sensitivity and spatial resolution.

To fully take advantage of these novel quantum sensors, we have worked to develop novel paradigms in two areas:

Quantum optimal control for metrology, to achieve the optimal compromise between signal acquisition and protection from deleterious noise.

Enhanced metrology by coupling with an ancillary system, to increase the interrogation time and the precision of sensor readout. As a first step, we have fully characterized the ancillary system.

Reported by

LABORATORIO EUROPEO DI SPETTROSCOPIE NON LINEARI
Italy
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