Non-Markovian Quantum Thermometry

Zhang, Ning; Chen, Chong; Bai, Si-Yuan; Wu, Wei; An, Jun-Hong

doi:10.1103/physrevapplied.17.034073

Cited by 20 publications

(12 citation statements)

References 71 publications

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“…The initial state of the probes and the ancilla is set to be ρ ⊗N T ⊗ρ A (t 0 ) with ρ A (t 0 ) = (|0 + |1 )( 0| + 1|)/2. So far, we have specified all the Liouville superoperators entering the full dynamical equation (18) as well as the initial state assumed in our scheme. Now, let us figure out the performance of our scheme in the presence of the noises.…”

Section: Resultsmentioning

confidence: 99%

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Approaching Heisenberg-scalable thermometry with built-in robustness against noise

Zhang,

Tong

2022

Preprint

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It is a major goal in quantum thermometry to reach a 1/N scaling of thermometric precision known as Heisenberg scaling but is still in its infancy to date. The main obstacle is that the resources typically required are highly entangled states, which are very difficult to produce and extremely vulnerable to noises. Here, we propose an entanglement-free scheme of thermometry to approach Heisenberg scaling for a wide range of N , which has built-in robustness irrespective of the type of noise in question. Our scheme is amenable to a variety of experimental setups. Moreover, it can be used as a basic building block for promoting previous proposals of thermometry to reach Heisenberg scaling, and its applications are not limited to thermometry but can be straightforwardly extended to other metrological tasks.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 97%

Approaching Heisenberg-scalable thermometry with built-in robustness against noise

Zhang,

Tong

2022

Preprint

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show abstract

“…The emerging field, known as quantum thermometry nowadays, could have a large impact on quantum platforms demanding precise temperature control, such as cold atoms, trapped ions, and superconducting circuits. This has motivated a vibrant activity on quantum thermometry over the past decade [8][9][10][11][12][13][14][15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Approaching Heisenberg-scalable thermometry with built-in robustness against noise

Zhang

Tong

2022

npj Quantum Inf

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It is a major goal in quantum thermometry to reach a 1/N scaling of thermometric precision known as Heisenberg scaling but is still in its infancy to date. The main obstacle is that the resources typically required are highly entangled states, which are very difficult to produce and extremely vulnerable to noises. Here, we propose an entanglement-free scheme of thermometry to approach Heisenberg scaling for a wide range of N, which has built-in robustness irrespective of the type of noise in question. Our scheme is amenable to a variety of experimental setups. Moreover, it can be used as a basic building block for promoting previous proposals of thermometry to reach Heisenberg scaling, and its applications are not limited to thermometry but can be straightforwardly extended to other metrological tasks.

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“…Mukherjee et al [34] utilized the periodic modulation to obtain the low-temperature thermometry with temperatureindependent relative uncertainty. More importantly, Zhang et al [35] obtained the Landau bound [36] by using a continuous-variable system to detect the temperature of a non-Markovian reservoir.…”

mentioning

confidence: 99%

Optimal temperature estimation in polariton Bose-Einstein Condensate

Xie

2022

Preprint

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Non-Markovian Quantum Thermometry

Cited by 20 publications

References 71 publications

Approaching Heisenberg-scalable thermometry with built-in robustness against noise

Approaching Heisenberg-scalable thermometry with built-in robustness against noise

Approaching Heisenberg-scalable thermometry with built-in robustness against noise

Optimal temperature estimation in polariton Bose-Einstein Condensate

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