Publications of Klemens Hammerer

Direkci, S.; Winkler, K.; Gut, C.; Hammerer, K.; Aspelmeyer, M.; Chen, Y.: Macroscopic quantum entanglement between an optomechanical cavity and a continuous field in presence of non-Markovian noise. Physical Review Research 6 (1), 013175 (2024)

Kielinski, T.; Schmidt, P. O.; Hammerer, K.: GHZ protocols enhance frequency metrology despite spontaneous decay. Science Advances 10 (43) (2024)

Roth , A.; Hammerer, K.; Tikhonov, K. S.: Light–matter quantum interface with continuous pump and probe. Journal of Physics B: Atomic, Molecular and Optical Physics 56 (5), 055502 (2023)

Scharnagl, M. S.; Kielinski, T.; Hammerer, K.: Optimal Ramsey interferometry with echo protocols based on one-axis twisting. Physical Review A 108 (8), 062611 (2023)

Duwe, M.; Zarantonello, G.; Pulido-Mateo, N.; Mendpara, H.; Krinner, L.; Bautista-Salvador, A.; Vitanov, N. V.; Hammerer, K.; Werner, R. F.; Ospelkaus, C.: Numerical optimization of amplitude-modulated pulses in microwave-driven entanglement generation. Quantum Science and Technology 7 (4), 045005 (2022)

Martinez Lahuerta, V.; Eilers , S.; Mehlstäubler, T. E.; Schmidt, P. O.; Hammerer, K.: Ab initio quantum theory of mass defect and time dilation in trapped-ion optical clocks. Physical Review A 106, 032803 (2022)

Schweer, J.; Steinmeyer, D.; Hammerer, K.; Heurs, M.: All-optical coherent quantum-noise cancellation in cascaded optomechanical systems. Physical Review A 106 (3), 033520 (2022)

Hinney, J.; Prasad, A. S.; Mahmoodian , S.; Hammerer, K.; Rauschenbeutel, A.; Schneeweiss, P.; Volz, J.; Schemmer, M.: Unraveling two-photon entanglement via the squeezing spectrum of light traveling through nanofiber-coupled atoms. Physical Review Letters 127 (12), 123602 (2021)

Kaubruegger, R.; Vasilyev, D. V.; Schulte, M.; Hammerer, K.; Zoller, P.: Quantum Variational Optimization of Ramsey Interferometry and Atomic Clocks. Physical Review X 11, 041045 (2021)

Canuel, B.; Abend, S.; Amaro-Seoane, P.; Badaracco, F.; Beaufils, Q.; Bertoldi, A.; Bongs, K.; Bouyer, P.; Braxmaier, C.; Chaibi, W. et al.; Christensen, N.; Fitzek , F.; Flouris, G.; Gaaloul, N.; Gaffet, S.; Alzar, C. L. G.; Geiger, R.; Guellati-Khelifa, S.; Hammerer, K.; Harms, J.; Hinderer, J.; Junca, J.; Katsanevas, S.; Klempt, C.; Kozanitis, C.; Krutzik, M.; Landragin, A.; Roche, I. L.; Leykauf, B.; Lien, Y. -.; Loriani, S.; Merlet, S.; Merzougui, M.; Nofrarias, M.; Papadakos, P.; Pereira, F.; Peters, A.; Plexousakis, D.; Prevedelli, M.; Rasel, E.; Rogister, Y.; Rosat, S.; Roura, A.; Sabulsky, D. O.; Schkolnik, V.; Schlippert, D.; Schubert, C.; Sidorenkov, L.; Siemß, J.-N.; Sopuerta, C. F.; Sorrentino, F.; Struckmann, C.; Tino, G. M.; Tsagkatakis, G.; Viceré, A.; von Klitzing, W.; Woerner, L.; Zou, X.: ELGAR—a European Laboratory forGravitation and Atom-interferometricResearch. Classical and Quantum Gravity 37, 225017 (2020)

Gut, C.; Winkler, K.; Hoelscher-Obermaier, J.; Hofer , S. G.; Nia, R. M.; Walk, N.; Steffens, A.; Eisert, J.; Wieczorek, W.; Slater, J. A. et al.; Aspelmeyer, M.; Hammerer, K.: Stationary optomechanical entanglement between a mechanical oscillator and its measurement apparatus. Physical Review Research 2, 033244 (2020)

Karg, T. M.; Gouraud, B.; Ngai, C. T.; Schmid, G.-L.; Hammerer, K.; Treutlein, P.: Light-mediated strong coupling between a mechanical oscillator and atomic spins one meter apart. Science 369 (6500), pp. 174 - 179 (2020)

Mahmoodian, S.; Calajó, G.; Chang, D. E.; Hammerer, K.; Sørensen, A. S.: Dynamics of many-body photon bound states in chiral waveguide QED. Physical Review X 10, 031011 (2020)

Nitzschke , D.; Schulte, M.; Niemann, M.; Cornejo, J. M.; Ulmer, S.; Lehnert, R.; Ospelkaus, C.; Hammerer, K.: Elementary Laser-Less Quantum Logic Operations with (Anti-)Protons in Penning Traps. Advanced Quantum Technologies, 1900133 (2020)

Prasad, A. S.; Hinney, J.; Mahmoodian , S.; Hammerer, K.; Rind, S.; Schneeweiss, P.; Sørensen, A. S.; Volz, J.; Rauschenbeutel, A.: Correlating photons using the collective nonlinear response of atoms weakly coupled to an optical mode. Nature Photonics (2020)

Schulte, M.; Lisdat, C.; Schmidt, P. O.; Sterr, U.; Hammerer, K.: Prospects and challenges for squeezing-enhanced optical atomic clocks. Nature Communications 11, 5955 (2020)

Schulte, M.; Martínez-Lahuerta, V. J.; Scharnagl, M. S.; Hammerer, K.: Ramsey interferometry with generalized one-axis twisting echoes. Quantum 4, 268 (2020)

Hahn, H.; Zarantonello, G.; Schulte, M.; Bautista-Salvador, A.; Hammerer, K.; Ospelkaus, C.: Integrated Be-9(+) multi-qubit gate device for the ion-trap quantum computer. npj Quantum Information 5, 70 (2019)

Karg , T. M.; Gouraud , B.; Hammerer, K.; Treutlein, P.: Remote Hamiltonian Interactions Mediated by Light. Physical Review A 99, 063829 (2019)

Wolf, F.; Shi, C.; Heip, J. C.; Gessner, M.; Pezzè, L.; Smerzi, A.; Schulte, M.; Hammerer, K.; Schmidt, P. O.: Motional Fock states for quantum-enhanced amplitude and phase measurements with trapped ions. Nature Communications 10, 2929 (2019)