This discussion centers on the generation of entanglement in a large atomic ensemble consisting of nearly 3,000 atoms through interaction with a single photon from a very weak laser pulse. The findings demonstrate the effectiveness of heralded methods for entanglement generation, showcasing how the information in a single photon can significantly alter the quantum state of a large system. The research highlights the potential for utilizing single photons in quantum information processes, as detailed in the article "Entanglement with negative Wigner function of almost 3,000 atoms heralded by one photon."
PREREQUISITESQuantum physicists, researchers in quantum information science, and anyone interested in advanced entanglement techniques and their applications in quantum computing.
Entanglement with negative Wigner function of almost 3,000 atoms heralded by one photonHere we generate entanglement in a large atomic ensemble via an interaction with a very weak laser pulse; remarkably, the detection of a single photon prepares several thousand atoms in an entangled state...More generally, our results demonstrate the power of heralded methods for entanglement generation, and illustrate how the information contained in a single photon can drastically alter the quantum state of a large system.