Hyperloss from coherent spatial-mode mixing in quantum-correlated networks

Quantum-correlated networks, crucial for distributing quantum resources like squeezed and entangled states, are hindered by loss-induced decoherence, even in robust squeezed states of light. This decoherence poses a significant challenge to modern quantum technology, including photonic quantum computing and quantum communications. Researchers have identified hyperloss from coherent spatial-mode mixing as a key contributor to this decoherence, highlighting the need for improved quantum resource distribution methods. The vulnerability of quantum-correlated networks to decoherence has significant implications for the development of quantum technologies, such as non-destructive biological sensing and gravitational-wave detection¹. As quantum computing continues to advance, understanding and mitigating the effects of decoherence will be essential for realizing the full potential of quantum technologies. So what matters to practitioners is that addressing hyperloss in quantum-correlated networks is critical to unlocking the potential of quantum computing and ensuring the security of quantum communications.