P09 - Quantum Information Processing with Trapped Ions

Thomas Monz


The long-term goals and visions of our project are to (i) push towards the demonstration of a fully-functional quantum processor beyond 30 qubits; (ii) develop and implement characterization, verification and validation (CVV) routines to certify quantum performance beyond classical capabilities; (iii) implement novel ideas for demonstrating a quantum advantage; and (iv) realize experiments that show-case QC for industrial applications. For the goals outlined above, the first four years will be dedicated to exploring scaling ion-trap quantum computing, CVV beyond a ten-qubit quantum processor, demonstration of a computational quantum speed-up, and the implementation of various quantum algorithms.

PI Thomas Monz on
Quantum Information Processing with Trapped Ions


Subproject Leader: Thomas Monz

Co-PI: Philipp Schindler

PostDoc: Martin Ringbauer, Pavel Hrmo

PhD students: Maria Galli, Roman Stricker

Admin: Patricia Moser, Claudia Mevenkamp


Entangling logical qubits with lattice surgery
A. Erhard, H. Poulsen Nautrup, M. Meth, L. Postler, R. Stricker, M. Stadler, V. Negnevitsky, M. Ringbauer, P. Schindler, H. J. Briegel, R. Blatt, N. Friis, T. Monz
Nature 589, 220-224 (2021)

Probing surface charge densities on optical fibers with a trapped ion
F. R. Ong, K. Schüpper, P. Jobez, M. Teller, B. Ames, D. A. Fioretto, K. Friebe, M. Lee, Y. Colombe, R. Blatt, T. E. Northup
New J. Phys. 22 063018 (2020)

Indistinguishable photons from a trapped-ion quantum network node
M. Meraner, A. Mazloom, V. Krutyanskiy, V. Krcmarsky, J. Schupp, D. Fioretto, P. Sekatski, T. E. Northup, N. Sangouard, B. P. Lanyon
Phys. Rev. A 102, 052614 (2020)
arXiv:1912.09259] [quant-ph]

Efficient ion-photon qubit SWAP gate in realistic ion cavity-QED systems without strong coupling
A. Borne, T. E. Northup, R. Blatt, B. Dayan
[arXiv:1902.03469] [quant-ph] (2019)

Cross-verification of independent quantum devices
C. Greganti, T. F. Demarie, M. Ringbauer, J. A. Jones, V. Saggio, I. A. Calafell, L. A. Rozema, A. Erhard, M. Meth, L. Postler, R. Stricker, P. Schindler, R. Blatt, T. Monz, P. Walther, J. F. Fitzsimons
[arXiv:1905.09790] [quant-ph] (2019)

Optimal metrology with programmable quantum sensors
Ch. D. Marciniak, T. Feldker, I. Pogorelov, R. Kaubruegger, D. V. Vasilyev, R. v. Bijnen, P. Schindler, P. Zoller, R. Blatt & T. Monz
Nature 603, 2022: 604-609

Demonstration of fault-tolerant universal quantum gate operations
L. Postler, S. Heußen, I. Pogorelov, M. Rispler, T. Feldker, M. Meth, Ch. D. Marciniak, R. Stricker, M. Ringbauer, R. Blatt, P. Schindler, M. Müller & T. Monz
Nature 605, 2022: 675-680

Relaxation times do not capture logical qubit dynamics
Pal, A. K., Schindler, P., Erhard, A., Rivas, Á., Martin-Delgado, M. A., Blatt, R., ... & Müller, M.
Quantum 6, 632 (2022)

Experimental quantification of spatial correlations in quantum dynamics
L. Postler, Á. Rivas, P. Schindler, A. Erhard, R. Stricker, D. Nigg, T. Monz, R. Blatt, M. Müller
Quantum 2 (2018)

Characterizing large-scale quantum computers via cycle benchmarking
A. Erhard, J. J. Wallman, L. Postler, M. Meth, R. Stricker, E. A. Martinez, P. Schindler, T. Monz, J. Emerson, R. Blatt
Nature Communications 10, 5347 (2019)

Coherent rotations of qubits within a multi-species ion-trap quantum computer
M. W. van Mourik, E. A. Martinez, L. Gerster, P. Hrmo, T. Monz, P. Schindler, R. Blatt
Physical Review A 102, 022611 (2020)

Experimental deterministic correction of qubit loss
R.  Stricker, D. Vodola, A. Erhard, L. Postler, M. Meth, M. Ringbauer, P. Schindler, T. Monz, M. Müller, R. Blatt
Nature 585 (2020)

Scalable and Parallel Tweezer Gates for Quantum Computing with Long Ion Strings
T. Olsacher, L. Postler, P. Schindler, T. Monz, P. Zoller, L. M. Sieberer
PRX Quantum 1, 2020

Quantum portfolio value forecasting
C. Sanz-Fernandez, R. Hernandez, Ch. D. Marciniak, I. Pogorelov, T. Monz, F. Benfenati, S. Mugel, R. Orus preprint arXiv:2111.14970

A universal qudit quantum processor with trapped ions
M. Ringbauer, M. Meth, L. Postler, R. Stricker, R. Blatt, P. Schindler, T. Monz
preprint arXiv:2109.06903

Towards experimental classical verification of quantum computation
R. Stricker, J. Carrasco, M. Ringbauer, L. Postler, M. Meth, C. Edmunds, P. Schindler, R. Blatt, P. Zoller, B. Kraus, T. Monz
preprint arXiv:2203.07395

Practical randomness and privacy amplification
C. Foreman, S. Wright, A. Edgington, M. Berta, F. J. Curchod
preprint arXiv:2009.06551

Characterizing quantum instruments: from non-demolition measurements to quantum error correction
R. Stricker, D.  Vodola, A. Erhard, L. Postler, M. Meth, M. Ringbauer, P. Schindler, R. Blatt, M. Müller, T. Monz
preprint arXiv:2110.06954

Experimental Bayesian calibration of trapped ion entangling operations
L. Gerster, F. Martínez-García, P. Hrmo, M. van Mourik, B. Wilhelm, D. Vodola, M. Müller, R. Blatt, P. Schindler, T. Monz
preprint arXiv:2112.01411

Analytical and experimental study of center line miscalibrations in Mølmer-Sørensen gates
F. Martínez-García, L. Gerster, D. Vodola, P. Hrmo, T. Monz, P. Schindler, M. Müller
preprint arXiv:2112.05447

Versatile fidelity estimation with confidence
A. Seshadri, M. Ringbauer, R. Blatt, T. Monz, S. Becker
preprint arXiv:2112.07925

Industrially Microfabricated Ion Trap with 1 eV Trap Depth
S. Auchter, C. Axline, C. Decaroli, M. Valentini, L. Purwin, R. Oswald, R. Matt, E. Aschauer, Y. Colombe, P. Holz, T. Monz, R. Blatt, P. Schindler, C. Rössler, J. Home
preprint arXiv:2202.08244

Probing phases of quantum matter with an ion-trap tensor-network quantum eigensolver
M. Meth, V. Kuzmin, R. van Bijnen, L. Postler, R. Stricker, R. Blatt, M. Ringbauer, T. Monz, P. Silvi, P. Schindler
preprint arXiv:2203.13271

Experimental single-setting quantum state tomography
R. Stricker, M. Meth, L. Postler, C. Edmunds, C. Ferrie, R. Blatt, P. Schindler, T. Monz, R. Kueng, M. Ringbauer
preprint arXiv:2206.00019

Native qudit entanglement in a trapped ion quantum processor
P. Hrmo, B. Wilhelm, L. Gerster, M. W. van Mourik, M. Huber, R. Blatt, P. Schindler, T. Monz, M. Ringbauer
preprint arXiv:2206.04104