Conditional spin squeezing can be achieved by continuous quantum-nondemolition measurement of an atomic sample. We show that simultaneous feedback of the measurement results can control the quantum state such that the squeezing becomes unconditional. For very strong cavity coupling, the squeezing approaches the Heisenberg limit. Squeezing is also produced at weaker couplings and even in free space, thus presenting a simple experimental test for quantum feedback
12 pages, 10 figuresThe standard quantum limit bounds the precision of measurements that can be achi...
Atomic clocks have reached the Standard Quantum Limit (SQL) of precision,1 set by the projection noi...
Large ensembles of uncorrelated atoms are extensively used as precise sensors of time, rotation, and...
Conditional spin squeezing can be achieved by continuous quantum-nondemolition measurement of an ato...
We show how a squeezed environment can be obtained by means of a suitable feedback of the output sig...
Squeezing of collective atomic spins has been shown to improve the sensitivity of atomic clocks and ...
Continuous measurement of collective atomic spin by an off-resonant optical probe can produce condit...
An important challenge in non-Markovian open quantum systems is to understand what information we ga...
12 pages, 7 figuresUsing the platform of a trapped-atom clock on a chip, we have generated spin-sque...
For the past decade, the stability of microwave atomic clocks has stood at the standard quantum limi...
This chapter describes recent experiments involving continuous measurement and quantum feedback cont...
This paper reviews quantum spin squeezing, which characterizes the sensitivity of a state with respe...
Beginning with a microscopic model for the interaction between atoms and the electromagnetic field,...
We revisit quantum state preparation of an oscillator by continuous linear position measurement. Qui...
Spin squeezing of collective atomic spins can be achieved conditionally via probing with light and s...
12 pages, 10 figuresThe standard quantum limit bounds the precision of measurements that can be achi...
Atomic clocks have reached the Standard Quantum Limit (SQL) of precision,1 set by the projection noi...
Large ensembles of uncorrelated atoms are extensively used as precise sensors of time, rotation, and...
Conditional spin squeezing can be achieved by continuous quantum-nondemolition measurement of an ato...
We show how a squeezed environment can be obtained by means of a suitable feedback of the output sig...
Squeezing of collective atomic spins has been shown to improve the sensitivity of atomic clocks and ...
Continuous measurement of collective atomic spin by an off-resonant optical probe can produce condit...
An important challenge in non-Markovian open quantum systems is to understand what information we ga...
12 pages, 7 figuresUsing the platform of a trapped-atom clock on a chip, we have generated spin-sque...
For the past decade, the stability of microwave atomic clocks has stood at the standard quantum limi...
This chapter describes recent experiments involving continuous measurement and quantum feedback cont...
This paper reviews quantum spin squeezing, which characterizes the sensitivity of a state with respe...
Beginning with a microscopic model for the interaction between atoms and the electromagnetic field,...
We revisit quantum state preparation of an oscillator by continuous linear position measurement. Qui...
Spin squeezing of collective atomic spins can be achieved conditionally via probing with light and s...
12 pages, 10 figuresThe standard quantum limit bounds the precision of measurements that can be achi...
Atomic clocks have reached the Standard Quantum Limit (SQL) of precision,1 set by the projection noi...
Large ensembles of uncorrelated atoms are extensively used as precise sensors of time, rotation, and...
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