50 citations · 210 across the 11 of their papers we have counts for
11 papers
Scalable architecture for measurement induced squeezed light interferometers
Abhinav Verma, Jacob Hastrup, Jonas S. Neergaard-Nielsen +1
Scalable interferometers lie at the heart of photonic quantum technologies, but their expansion has been fundamentally limited by optical losses that grow with circuit depth. Here,…
Analysis of loss correction with the Gottesman-Kitaev-Preskill code
Jacob Hastrup, Ulrik L. Andersen
The Gottesman-Kitaev-Preskill (GKP) code is a promising bosonic quantum error-correcting code, encoding logical qubits into a bosonic mode in such a way that many physically releva…
All-optical cat-code quantum error correction
Jacob Hastrup, Ulrik Lund Andersen
The cat code is a promising encoding scheme for bosonic quantum error correction as it allows for correction against losses--the dominant error mechanism in most bosonic systems. H…
Universal unitary transfer of continuous-variable quantum states into a few qubits
Jacob Hastrup, Kimin Park, Jonatan Bohr Brask +2
We present a protocol for transferring arbitrary continuous-variable quantum states into a few discrete-variable qubits and back. The protocol is deterministic and utilizes only tw…
Slowing quantum decoherence of oscillators by hybrid processing
Kimin Park, Jacob Hastrup, Jonas Schou Neergaard-Nielsen +3
Quantum information encoded into superposition of coherent states is an illustrative representative of practical applications of macroscopic quantum coherence possessing. However,…
Generation of optical Gottesman-Kitaev-Preskill states with cavity QED
Jacob Hastrup, Ulrik L. Andersen
Gottesman-Kitaev-Preskill (GKP) states are a central resource for fault-tolerant optical continuous-variable quantum computing and communication. However, their realization in the…
Unconditional preparation of squeezed vacuum from Rabi interactions
Jacob Hastrup, Kimin Park, Radim Filip +1
Squeezed states of harmonic oscillators are a central resource for continuous-variable quantum sensing, computation and communication. Here we propose a method for the generation o…
Cubic phase gates are not suitable for non-Clifford operations on GKP states
Jacob Hastrup, Mikkel V. Larsen, Jonas S. Neergaard-Nielsen +2
With the Gottesman-Kitaev-Preskill (GKP) encoding, Clifford gates and error correction can be carried out using simple Gaussian operations. Still, non-Clifford gates, required for…
Improved readout of qubit-coupled Gottesman-Kitaev-Preskill states
Jacob Hastrup, Ulrik Lund Andersen
The Gottesman-Kitaev-Preskill encoding of a qubit in a harmonic oscillator is a promising building block towards fault-tolerant quantum computation. Recently, this encoding was exp…
Measurement-free preparation of grid states
Jacob Hastrup, Kimin Park, Jonatan Bohr Brask +2
Quantum computing potentially offers exponential speed-ups over classical computing for certain tasks. A central, outstanding challenge to making quantum computing practical is to…
Deterministic generation of a four-component optical cat state
Jacob Hastrup, Jonas Schou Neergaard-Nielsen, Ulrik Lund Andersen
The four-component cat state represents a particularly useful quantum state for realizing fault-tolerant continuous variable quantum computing. While such encoding has been experim…