News about Quantum physics

Qubits put into reverse

A group of scientists at the Niels Bohr Institute, University of Copenhagen, has figured out how to make spin qubits perform controlled backward rotations. This has never been shown before.

Asbjørn Arvad Jørgensen

Characterizing the lattice induced light shifts of the Ytterbium optical lattice clock Supervisor: Jan W. Thomsen

Sofie Lindskov Hansen

Single-Photon Manipulation in Nanophotonic Circuits Supervisor: Peter Lodahl

Mantas Cepulkovskis

Nonlinear photon interactions in waveguides Supervisor: Anders Søndberg Sørensen

Smart atomic cloud solves Heisenberg's observation problem

One of the most fundamental principles of physics, "Quantum Back Action", has been challenged by researchers from the Niels Bohr Institute, which has used laser light to link a vibrating membrane with cesium atoms.

Iron secrets behind superconductors unlocked

Due to magnetism iron should - theoretically - be a poor superconductor. Nevertheless certain ironbased materials possess fine superconducting properties. Why? Because the five unbound electrons found in iron...

Signe Folden Simonsen

Observation of Wave Propagation in Stationary Light Supervisor: Anders S. Sørensen

Iason Tsiamis

Continuous Wave Single Photon Transistor with Rydberg Atoms Supervisor: Anders Søndberg Sørensen

First step towards photonic quantum network

Researchers from the Niels Bohr Institute have now developed the first building blocks needed to construct complex quantum photonic circuits for quantum networks. This rapid development in quantum networks

Parisah Akrami

Ultra stable laser sources based on molecular acetylene Supervisors: Jan W. Thomsen and Martin R. Henriksen

Ivan Iakoupov

Enhancement of optical nonlinearities with stationary light Academic advisor: Anders S. Sørensen

Emil Zeuthen

Electro-optomechanical transduction Quantum hard-sphere model for dissipative Rydberg-EIT media Supervisor: Prof. Anders S. Sørensen

Kasper Ejdal Lund

Quantum Gates in Photonic Waveguides Supervisor: Anders Søndberg Sørensen

Sigrid Skovbo Adsersen

An Iodine Based Thermal Optical Frequency Reference using NICE-OHMS Detection Supervisor: Jan W. Thomsen

William H. P. Nielsen

antum Cavity Optomechanics with Phononic Bandgap Shielded Silicon Nitride Membranes Principal supervisor: Prof. Eugene S. Polzik

Tau Bernstorff Lehmann

Single-Photon Technologies based on Quantum-Dots in Photonic Crystals: from sources to application Supervisor: Prof. Peter Lodahl

Bjarke Takashi Røjle Christensen

Laser Stabilization With Laser Cooled Strontium Academic advisor: Jan W. Thomsen

Gabija Kiršanske

Electrical control of excitons in semiconductor nanostructures: from quantum dots in photonic-crystal devices to the exciton Mott transition in coupled quantum wells Supervisor: Prof. Peter Lodahl and Assoc. Prof. Søren…

Heidi Lundgaard Sørensen

A WAVEGUIDE PLATFORM FOR COLLECTIVE LIGHT-ATOM INTERACTION Principal supervisor: Prof. Eugene S. Polzik

Sofus L. Kristensen

Doppler-Free Cavity Enhanced Spectroscopy of Molecular Iodine Supervisors: Sigrid Skovbo Adsersen and Jan Westenkær Thomsen

Jean-Baptiste Sylvain Béguin

A one-dimensional quantum interface between a few atoms and weak light Principal supervisor: Prof. Eugene S. Polzik

Marius Gaudesius

Towards entanglement generation between Cesium-133 atomic ensemble and nanomechanical membrane resonator Supervisor: Prof. Eugene S. Polzik

Kilian W. Kluge

Characterization of collective spin states in atomic ensembles trapped around tapered nanofibers Supervisor: Jörg H. Müller

Luca Dellantonio

Entanglement criteria for Spin Squeezing