Protocols for creating and distilling multipartite GHZ states with Bell pairs
arXiv:2010.12259 · doi:10.1109/TQE.2020.3044179
Abstract
The distribution of high-quality Greenberger-Horne-Zeilinger (GHZ) states is at the heart of many quantum communication tasks, ranging from extending the baseline of telescopes to secret sharing. They also play an important role in error-correction architectures for distributed quantum computation, where Bell pairs can be leveraged to create an entangled network of quantum computers. We investigate the creation and distillation of GHZ states out of non-perfect Bell pairs over quantum networks. In particular, we introduce a heuristic dynamic programming algorithm to optimize over a large class of protocols that create and purify GHZ states. All protocols considered use a common framework based on measurements of non-local stabilizer operators of the target state (i.e., the GHZ state), where each non-local measurement consumes another (non-perfect) entangled state as a resource. The new protocols outperform previous proposals for scenarios without decoherence and local gate noise. Furthermore, the algorithms can be applied for finding protocols for any number of parties and any number of entangled pairs involved.
References in corpus (12)
- Single-Photon Switching and Entanglement of Solid-State Qubits in an Integrated Nanophotonic System
- Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
- Modular Entanglement of Atomic Qubits using both Photons and Phonons
- Quantum network nodes based on diamond qubits with an efficient nanophotonic interface
- Topological quantum computing with a very noisy network and local error rates approaching one percent
- An integrated nanophotonic quantum register based on silicon-vacancy spins in diamond
- Quantum Anonymous Transmissions
- Optimal approach to quantum communication using dynamic programming
- Entanglement purification protocols for all graph states
- Purification of genuine multipartite entanglement
- Optimising repeater schemes for the quantum internet
- Freely Scalable Quantum Technologies using Cells of 5-to-50 Qubits with Very Lossy and Noisy Photonic Links