Universal quantum computing with continuous variables requires non-Gaussian resources,
in addition to a Gaussian set of operations. A known resource enabling universal quantum …

The no-cloning theorem states that an unknown quantum state cannot be cloned exactly and
deterministically due to the linearity of quantum mechanics. Associated with this theorem is …

We propose and theoretically analyze a teleportation-based scheme for the high-fidelity
noiseless quantum amplification of coherent states of light. In our approach, the probabilistic …

We demonstrate the violation of an Einstein-Podolsky-Rosen steering inequality developed
for single-photon path entanglement with displacement-based detection. We use a high-rate …

We demonstrate postselection free heralded qubit amplification for Time-Bin qubits and
single photon states in an all-fibre, telecom-wavelength, scheme that highlights the …

Device-independent quantum key distribution (DI-QKD) represents one of the most
fascinating challenges in quantum communication, exploiting concepts of fundamental …

We demonstrate an optical quantum nondemolition (QND) interaction gate with a bandwidth
of about 100 MHz. Employing this gate, we are able to perform QND measurements in real …

Manipulating light by adding and subtracting individual photons is a powerful approach with
a principal drawback: the operations are fundamentally probabilistic and the probability is …

Continuous-variable quantum teleportation enables deterministic teleportation of quantum
states of optical modes. However, the state transfer is imperfect and limited by the amount of …

Vacuum-one-photon entanglement can serve as an alternative to many protocols
implemented by two-photon states, and also exhibits its own practical advantages. Quantum …