How to make a quantum time capsule
Igor Ermakov of Skoltech tells us about his recent work on Almost complete local revivals and Quantum Time Capsules. This is a work recently published here:
https://journals.aps.org/pra/abstract...
The method allows you to create a revival of the expectation value of a qubit inside virtually any type of many-body quantum Hamiltonian at a desired time, but engineering a suitable state. This allows you to mask the information in a state only until a particular revival time, that is freely choosable.
#timecapsule #quantuminformation #quantum
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