33 research outputs found
Realizing two-qubit gates through mode engineering on a trapped-ion quantum computer
Two-qubit gates are a fundamental constituent of a quantum computer and
typically its most challenging operation. In a trapped-ion quantum computer,
this is typically implemented with laser beams which are modulated in
amplitude, frequency, phase, or a combination of these. The required modulation
becomes increasingly more complex as the quantum computer becomes larger,
complicating the control hardware design. Here, we develop a simple method to
essentially remove the pulse-modulation complexity by engineering the normal
modes of the ion chain. We experimentally demonstrate the required mode
engineering in a three ion chain. This opens up the possibility to trade off
complexity between the design of the trapping fields and the optical control
system, which will help scale the ion trap quantum computing platform.Comment: arXiv admin note: text overlap with arXiv:2104.13870 Updated funding
informatio
Para-particle oscillator simulations on a trapped ion quantum computer
Deformed oscillators allow for a generalization of the standard fermions and
bosons, namely, for the description of para-particles. Such particles, while
indiscernible in nature, can represent good candidates for descriptions of
physical phenomena like topological phases of matter. Here, we report the
digital quantum simulation of para-particle oscillators by mapping
para-particle states to the state of a qubit register, which allow us to
identify the para-particle oscillator Hamiltonian as an model, and further
digitize the system onto a universal set of gates. In both instances, the gate
depth grows polynomially with the number of qubits used. To establish the
validity of our results, we experimentally simulate the dynamics of
para-fermions and para-bosons, demonstrating full control of para-particle
oscillators on a quantum computer. Furthermore, we compare the overall
performance of the digital simulation of dynamics of the driven para-Fermi
oscillator to a recent analog quantum simulation result.Comment: 7 pages, 5 figures, 1 tabl