Exponentially-enhanced quantum sensing with non-Hermitian lattice dynamics
Non-Hermitian effects can be used to enhance the parameter sensitivity of a system and thus improve metrology applications. Here, the authors present an asymmetric non-Hermitian tight-binding chain where the quantum Fisher information increases exponentially with the system size.
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Publishing Group
2020-10-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-020-19090-4 |