Local multi-qubit Clifford equivalence of graph states

In the range of applications opened by quantum technology, often a highly entangled source state is needed as an input for a protocol (target state). The easiest example of such an application is QKD, other examples are quantum secret sharing and measurement based quantum computing. Generating a non-local entangled state is however not trivial....

Optimal charging of a quantum battery consisting of electron spin qubits

When the size of a system is reduced to the scale of single particles, classical thermodynamics fails to predict the system’s behaviour as quantum fluctuations come into play. Recently it has been proven by Binder et all. [1] that theoretically a quantum battery, consisting of qubits, can be charged faster (i.e. with higher power per qubit) when...

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