74 citations · 94 across the 2 of their papers we have counts for
6 papers · 1 filter
Reducing the amount of single-qubit rotations in VQE and related algorithms
S. E. Rasmussen, N. J. S. Loft, T. Bækkegaard +2
With the advent of hybrid quantum classical algorithms using parameterized quantum circuits the question of how to optimize these algorithms and circuits emerges. In this paper we…
Simple implementation of high fidelity controlled-SWAP gates and quantum circuit exponentiation of non-Hermitian gates
S. E. Rasmussen, N. T. Zinner
The swap gate is an entangling swapping gate where the qubits obtain a phase of if the state of the qubits is swapped. Here we present a simple implementation of the control…
Single-step implementation of high fidelity -bit Toffoli gate
S. E. Rasmussen, K. Groenland, R. Gerritsma +2
The family of -bit Toffoli gates, with the two-bit Toffoli gate as the figurehead, are of great interest in quantum information as they can be used as universal gates and in qua…
A coherent router for quantum networks
K. S. Christensen, S. E. Rasmussen, D. Petrosyan +1
Scalable quantum information processing will require quantum networks of qubits with the ability to coherently transfer quantum states between the desired sender and receiver nodes…
A controllable two-qubit swapping gate using superconducting circuits
S. E. Rasmussen, K. S. Christensen, N. T. Zinner
In this paper we investigate a linear chain of qubits and determine that it can be configured into a conditional two-qubit swapping gate, where the first and last qubits of the cha…
Realizing time crystals in discrete quantum few-body systems
R. E. Barfknecht, S. E. Rasmussen, A. Foerster +1
The exotic phenomenon of time translation symmetry breaking under periodic driving - the time crystal - has been shown to occur in many-body systems even in clean setups where diso…