5 papers
Phonon- and magnon-mediated decoherence of a magnonic qubit
Vemund Falch, Arne Brataas, Jeroen Danon
We investigate the decoherence of magnonic qubits in small ferromagnetic insulators and compute the relaxation and dephasing rates due to magnon-phonon and magnon-magnon interactio…
Magnon and photon blockade in a hybrid antiferromagnet-cavity quantum system
Vemund Falch, Arne Brataas, Alireza Qaiumzadeh
We investigate both magnon and photon blockade for an antiferromagnetic insulator coupled to a linearly polarized cavity mode. We focus on the cross-Kerr nonlinearity between the t…
Second-order correlation and squeezing of photons in cavities with ultrastrong magnon-photon interactions
Vemund Falch, Arne Brataas, Alireza Qaiumzadeh
We investigate the second-order photon correlation function in cavity-magnon systems, focusing on ferromagnetic and antiferromagnetic cavities within the ultrastrong coupling regim…
Impact of spin torques and spin pumping phenomena on magnon-plasmon polaritons in antiferromagnetic insulator-semiconductor heterostructures
Vemund Falch, Jeroen Danon, Alireza Qaiumzadeh +1
We investigate the impact of spin torque and spin pumping on the surface magnon polariton dispersion in a antiferromagnetic insulator-semiconductor heterostructure. In the bilayer…
Quantum Poker A game for quantum computers suitable for benchmarking error mitigation techniques on NISQ devices
Franz G. Fuchs, Vemund Falch, Christian Johnsen
Quantum computers are on the verge of becoming a commercially available reality. They represent a paradigm shift in computing, with a steep learning gradient. The creation of games…