Quantum theory has been successfully validated in numerous laboratory experiments. But
would such a theory, which effectively describes the behavior of microscopic physical …

Quantum cryptography is arguably the fastest growing area in quantum information science.
Novel theoretical protocols are designed on a regular basis, security proofs are constantly …

Concerted efforts are underway to establish an infrastructure for a global quantum Internet to
realise a spectrum of quantum technologies. This will enable more precise sensors, secure …

Long-distance entanglement distribution is essential for both foundational tests of quantum
physics and scalable quantum networks. Owing to channel loss, however, the previously …

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Quantum key distribution (QKD) is a family of protocols for growing a private encryption key
between two parties. Despite much progress, all ground-based QKD approaches have a …

Global-scale quantum communication links will form the backbone of the quantum internet.
However, exponential loss in optical fibres precludes any realistic application beyond few …

Quantum communication (QC), namely, the faithful transmission of generic quantum states,
is a key ingredient of quantum information science. Here we demonstrate QC with …

We discuss effects of loss of coherence in low energy quantum systems caused by or related
to gravitation, referred to as gravitational decoherence. These effects, resulting from random …

Schemes of gravitationally induced decoherence are being actively investigated as possible
mechanisms for the quantum-to-classical transition. Here, we introduce a decoherence …