![]() ![]() As a result, the number of operations that can be implemented before the level of errors exceeds the critical level is modest . However, available quantum information processing devices have serious limitations, the main fundamental reason for this being decoherence. Specifically, currently available quantum processing devices are able to solve computational problems close to the limits of what can be achieved with most powerful classical technologies . We also demonstrate the applicability of the developed approach for suppressing decoherence in the process of distributing a two-qubit state over remote physical qubits of a quantum processor.ĭuring recent decades, remarkable progress in developing quantum information processing devices has been achieved . We expect the considered approach to be useful for analyzing capabilities of quantum information processing devices in transmitting known quantum states. We observe the increase in the fidelity of the output quantum state both in a quantum emulation experiment, where all protecting unitaries are perfect, and in a real experiment with a cloud-accessible quantum processor, where protecting unitaries themselves are affected by the noise. In this work, by following the recent theoretical proposal, we study an application of quantum state-dependent pre- and post-processing unitary operations for protecting the given (multi-qubit) quantum state against the effect of decoherence acting on all qubits. The problem of transmitting a quantum state (known or unknown) from one place to another is of great interest in this context. Decoherence is the fundamental obstacle limiting the performance of quantum information processing devices. ![]()
0 Comments
Leave a Reply. |