Optimal local preparation of an arbitrary mixed state of two qubits. Closed expression for the single copy case
Guifré Vidal
Abstract
In this note we consider the problem of preparing a single copy of an arbitrary two-qubit mixed state ρ starting from an entangled pure state ψ and using only local operations assisted with classical communication. We present an analytical expression for the minimal amount of pure state entanglement required, and describe the corresponding local strategy. We also examine optimal probabilistic generalizations of the previous process.
Create a lesson
Related papers
Discovering state-of-the-art quantum circuits with large language models
Andi Gu, Alek H. Kemeny, Susanne F. Yelin et al.
Stability of Quantum LDPC States under Local Pauli Noise
Tai-Hsuan Yang, Andrew D. Kim, Akash Vijay et al.
Magic in quantum trajectory unravelings of noisy random quantum circuits
Sara Santos, Alessio Paviglianiti, Vincenzo Savona
Magna: simulating magic state factories as cheaply as Clifford circuits
Yifei Wang, Yingfei Gu
Classical Capacity of Single-Mode Bosonic Gaussian Channels
Gerardo Adesso, Ludovico Lami, Vittorio Giovannetti
SynDebug: A Framework to Debug Logic Bugs in Fault-Tolerant Quantum Computing Programs
Nicholas S. DiBrita, Jack Lange, Tirthak Patel