Quantum/Machines/IonQ Aria
USA · decommissioned · Trapped ions
IonQ Aria
IonQ Aria is a trapped ions quantum computer operated by IonQ in USA. It has 25 physical qubits. It ranks 8 of 15 trapped ion machines in this table by physical qubit count. 12 sourced specs are in the spec sheet. 2 published benchmark or milestone records are listed below, each marked by who measured it.
Also known as Aria, ionq.qpu.aria-1
IonQ's 25-qubit, #AQ 25 system. IonQ's page states it was retired in 2026 and points users to Forte and Tempo. Microsoft's Azure Quantum documentation still lists an Aria 1 target with 25 qubits, so the exact retirement date is not pinned down. Launch date and site are not given.
Spec sheet
Technical details as the builder or a paper states them, each with its own source. A blank is a fact we could not source, not a zero. Fidelity and coherence figures are in the benchmark table below.
| Spec | Value | Basis | Note | Source |
|---|---|---|---|---|
| Processor | Iris in-house ion trap with second-generation vacuum chamber | Vendor reported | IonQ page credits the Iris trap and improved vacuum for better stability; Aria is listed as retired in 2026. | ionq.com |
| Qubit type | 171Yb+ hyperfine ion | Vendor reported | IonQ page states Yb-171+; the Azure page says hyperfine states of ytterbium ions without naming the isotope. | ionq.comlearn.microsoft.com |
| Topology | All-to-all connectivity with 32 individual addressing beams | Vendor reported | IonQ page says Aria's laser system has 32 individual beams, one per qubit. | ionq.com |
| Native gates | GPi, GPi2, Molmer-Sorensen (MS) with virtual Z | Vendor reported | IonQ native gate guide lists GPi, GPi2 and MS for Aria-class systems; Forte-class systems use ZZ instead. | docs.ionq.com |
| Single-qubit gate time | 135,000 ns | Vendor reported | Azure provider page lists 135 us average single-qubit gate time for Aria. | learn.microsoft.com |
| Two-qubit gate time | 600,000 ns | Vendor reported | Azure provider page lists 600 us average two-qubit gate time for Aria. | learn.microsoft.com |
| Cooling and environment | Vacuum chamber with laser cooling of Yb-171+ ions | Vendor reported | IonQ page describes a second-generation chamber with improved vacuum; no cryogenic stage is described. | ionq.com |
| Software | Qiskit, Cirq, PennyLane, qBraid, CUDA-Q, IonQ API | Vendor reported | IonQ documentation index lists these SDK guides; the list is IonQ-wide, not Aria-specific. | docs.ionq.comdocs.ionq.com |
| Cloud platforms | IonQ Quantum Cloud; Microsoft Azure Quantum | Vendor reported | Azure still lists the Aria 1 target; IonQ docs list Aria 1 and Aria 2 as Retired and Amazon Braket's current device list omits Aria. | learn.microsoft.comdocs.ionq.com |
| Access and pricing | Cloud queue (pay as you go on Azure); retired by IonQ in 2026 | Vendor reported | No price is published in the pages consulted; Azure says Aria is available through its Pay As You Go plan. | learn.microsoft.comionq.com |
| Predecessor | IonQ Harmony | Vendor reported | Aria page compares itself with Harmony. | ionq.com |
| Successor | IonQ Forte | Vendor reported | Forte page states improvements over Harmony and Aria; Aria page directs users to current systems. | ionq.com |
Published benchmark figures
These are numbers the builder or a paper reports for this machine, not results from a common test. The basis column says who measured them. What the metrics mean and why they are not comparable across technologies.
| Metric | Value | Measured | Basis | Note | Source |
|---|---|---|---|---|---|
| Algorithmic qubits (#AQ) | 25 | 2026-10 | Vendor reported | #AQ 25 as stated on IonQ system page | ionq.com |
| Two-qubit gate fidelity | 99.4% | 2026-10 | Vendor reported | IonQ lists 0.6 percent two-qubit error; Azure docs list 99.6 percent average, so figures disagree | ionq.com |
Timeline
- 2026: Retired
More from IonQ
- IonQ Harmony (decommissioned, 11 qubits)
- IonQ Forte (operational, 36 qubits)
- IonQ Tempo (operational, 100 qubits)
- IonQ Superion 256 (under construction, 256 qubits)
Comparable trapped ion machines
Closest in physical qubit count within the same technology. Counts of different qubit types are not interchangeable across technologies.
| Machine | Operator | Qubits | Status |
|---|---|---|---|
| Quantinuum H1 | Quantinuum | 20 | upgraded |
| Reimei | RIKEN | 20 | operational |
| AQT LRZ Ion-Trap System | LRZ | 20 | operational |
| PIAST-Q | PSNC | 20 | operational |
| IonQ Forte | IonQ | 36 | operational |
| IonQ Forte Enterprise at EPB | EPB | 36 | operational |