Demonstration of three- and four-body interactions between trapped-ion spins
Quantum processors use the native interactions between effective spins to simulate Hamiltonians or execute quantum gates. In most processors, the native interactions are pairwise, limiting the efficiency of controlling entanglement between many qubits. The capability of manipulating entanglement gen...
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| Veröffentlicht in: | Nature physics 2023-06, Vol.19 (10), p.1452-1458 |
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| creator | Katz, Or Feng, Lei Risinger, Andrew Monroe, Christopher Cetina, Marko |
| description | Quantum processors use the native interactions between effective spins to simulate Hamiltonians or execute quantum gates. In most processors, the native interactions are pairwise, limiting the efficiency of controlling entanglement between many qubits. The capability of manipulating entanglement generated by higher-order interactions is a key challenge for the simulation of many Hamiltonian models appearing in various fields, including high-energy and nuclear physics, as well as quantum chemistry and error correction applications. Here we experimentally demonstrate control over a class of native interactions between trapped-ion qubits, extending conventional pairwise interactions to a higher order. By exploiting state-dependent squeezing operations, we realize and characterize high-fidelity gates and spin Hamiltonians comprising three- and four-body spin interactions. Our results demonstrate the potential of high-order spin interactions as a toolbox for quantum information applications.
Generation of entanglement in quantum computers stems from the native interactions between qubits, which are usually restricted to the pairwise limit. A method to control three- and four-body interactions has now been demonstrated with trapped ions. |
| doi_str_mv | 10.1038/s41567-023-02102-7 |
| format | Article |
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Generation of entanglement in quantum computers stems from the native interactions between qubits, which are usually restricted to the pairwise limit. 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Quantum Systems Accelerator (QSA)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Demonstration of three- and four-body interactions between trapped-ion spins</atitle><jtitle>Nature physics</jtitle><stitle>Nat. Phys</stitle><date>2023-06-29</date><risdate>2023</risdate><volume>19</volume><issue>10</issue><spage>1452</spage><epage>1458</epage><pages>1452-1458</pages><issn>1745-2473</issn><eissn>1745-2481</eissn><abstract>Quantum processors use the native interactions between effective spins to simulate Hamiltonians or execute quantum gates. In most processors, the native interactions are pairwise, limiting the efficiency of controlling entanglement between many qubits. The capability of manipulating entanglement generated by higher-order interactions is a key challenge for the simulation of many Hamiltonian models appearing in various fields, including high-energy and nuclear physics, as well as quantum chemistry and error correction applications. 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| subjects | 639/766/36/1121 639/766/483/3926 639/766/483/481 Atomic Classical and Continuum Physics Complex Systems Computer engineering Condensed Matter Physics Control methods Error correction Error correction & detection Mathematical and Computational Physics Molecular Nuclear physics Optical and Plasma Physics Physics Physics and Astronomy Processors Quantum chemistry Quantum computers Quantum computing Quantum entanglement Quantum phenomena Qubits (quantum computing) Simulation Theoretical |
| title | Demonstration of three- and four-body interactions between trapped-ion spins |
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